如何使用纬度和经度坐标从某个位置获取时区?

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【中文标题】如何使用纬度和经度坐标从某个位置获取时区?【英文标题】:How to get a time zone from a location using latitude and longitude coordinates? 【发布时间】:2013-04-18 15:24:09 【问题描述】:

给定一个位置的纬度和经度,如何知道该位置的有效时区?

在大多数情况下,我们正在寻找 IANA/Olson 时区 ID,尽管有些服务可能只返回 UTC 偏移量或其他一些时区标识符。详情请阅读timezone tag info。

【问题讨论】:

我注意到的一件事是在确定时区时缺少任何 UTC 时间戳要求。例如,伦敦的 long/lat 不足以确定时区是 GMT 或 BST(英国夏令时/夏令时)的天气。所以肯定要确定正确的时区,您需要 lat、long 和 UTC 时间戳。 @MichaelWaterfall - 要确定您是在 GMT (UTC+0000) 还是 BST (UTC+0100) - 是的,您是绝对正确的。但这些是时区偏移量,而不是时区标识符。两者都包含在 IANA 时区数据库的同一 "Europe/London" 时区标识符中。 啊,好吧,一旦使用给定的时区标识符渲染时间,就会添加夏令时偏移量(如果需要)? 它仍然可能需要 UTC 时间戳。例如,俄罗斯在过去 6 年中 4 次更改时区边界。 en.wikipedia.org/wiki/Time_in_Russia @thur - 就边界本身而言,随着边界争端的开始或结束,每年都有一些历史差异。但是,当发生像 Arnial 所描述的那样的转变时,tzdb 会为受影响的区域创建一个新的时区,因此该区域的所有时间都会被计算在内 - 包括历史差异。我们称之为“区域分割”。一个很好的俄罗斯例子是Europe/Astrakhan,它与 tzdb 2016b 的Europe/Volgograd 分开。 【参考方案1】:

时区定位网络服务

Google Maps Time Zone API Bing Maps Time Zone API Azure Maps Time Zone API GeoNames Time Zone API TimeZoneDB API AskGeo - 商业广告(但 arguably more accurate than GeoNames) GeoGarage Time Zone API - 商业广告,专注于航海时区。

原始时区边界数据

Timezone Boundary Builder - 从 OpenStreetMaps 地图数据构建时区 shapefile。包括海岸线附近的领海。

以下项目以前是时区边界数据的来源,但不再积极维护。

tz_world - 来自 Eric Muller 的原始 shapefile 数据 whereonearth-timezone - 合并了 WOEDB 数据的 GeoJSON 版本

时区地理位置离线实现

使用时区边界构建器数据的实现

node-geo-tz - javascript 库(仅限 Node.js) timespace - JavaScript 库 tz-lookup-oss - JavaScript 库 GeoTimeZone - .NET 库 Geo-Timezone - php 库 timezonefinder - Python 库 ZoneDetect - C 库 Timeshape - Java 库 TimeZoneMap - Java 和 android 库 lutz - R 库 go-tz - 去图书馆 Timezone lookup - 去图书馆 docker-timezone-lookup - docker 容器包装 node-geo-tz

使用旧 tz_world 数据的实现

latlong - Go 库(也请阅读 this post。) TimeZoneMapper - Java 库 tzwhere - JavaScript/Node 库 pytzwhere - Python 库 timezone_finder - Ruby 库 LatLongToTimeZone - Java 和 Swift 库 What Time is it here? - 描述 PHP 和 MongoDB 的博客文章 rundel/timezone - R 库

调用其中一种网络服务的库

timezone - 调用 GeoNames 的 Ruby gem AskGeo 有自己的库,用于从 Java 或 .Net 调用 GeoNames 拥有几乎所有内容的客户端库

自托管网络服务

geo2tz - 基于 Timezone lookup,可通过 Docker 镜像获得

其他想法

查找最近的城市with an R-Tree 查找最近的城市with mysql

如果您知道其他人,请更新此列表

另外,请注意,最近城市方法可能不会产生“正确”的结果,只是一个近似值。

转换为 Windows 区域

列出的大多数方法都将返回 IANA 时区 ID。如果您需要转换为 Windows 时区以与 .NET 中的 TimeZoneInfo 类一起使用,请使用 TimeZoneConverter 库。

不要使用 zone.tab

tz database 包含一个名为 zone.tab 的文件。此文件主要用于显示时区列表供用户选择。它包括每个时区的参考点的纬度和经度坐标。这允许创建突出这些点的地图。例如,请参阅the moment-timezone home page 上显示的交互式地图。

虽然使用此数据从纬度和经度坐标解析时区可能很诱人,但请考虑这些是点,而不是边界。最好的办法是确定最近的点,在很多情况下这不是正确的点。

考虑以下示例:

                    

两个方块代表不同的时区,其中每个方块中的黑点是参考位置,例如可以在 zone.tab 中找到的位置。蓝点代表我们试图为其查找时区的位置。显然,这个位置在左侧的橙色区域内,但如果我们只看离参考点最近的距离,它将解析为右侧的绿色区域。

【讨论】:

GeoNames 实际上非常适合我的需要。谢谢! @Matt 但是,据我了解,目前没有离线数据库可以根据位置坐标提供时区信息和与 UTC 的偏移量? @MattJohnson 我如何使用地名客户端库 这些新的 Google API 费率是敲诈勒索的。截至 7 月 18 日,以 1 美元的价格收到 200 个请求。这是 10 倍的增长。 @KanagaveluSugumar - 每个库的语言都包含在列表中。当前对 Java 的最高推荐是 TimeShape。【参考方案2】:

node.js 的这个解决方案怎么样 https://github.com/mattbornski/tzwhere

还有它的 Python 对应物: https://github.com/pegler/pytzwhere

【讨论】:

我将这些添加到上面的社区 wiki 答案中。谢谢!【参考方案3】:

我们Teleport 刚刚开始opening up our API's,其中一个用例还公开了坐标的 TZ 信息。

例如,可以通过以下方式请求我们所有可用的 TZ 坐标信息:

curl -s https://api.teleport.org/api/locations/59.4372,24.7453/?embed=location:nearest-cities/location:nearest-city/city:timezone/tz:offsets-now | jq '._embedded."location:nearest-cities"[0]._embedded."location:nearest-city"._embedded."city:timezone"'

这将返回以下内容


  "_embedded": 
    "tz:offsets-now": 
      "_links": 
        "self": 
          "href": "https://api.teleport.org/api/timezones/iana:Europe%2FTallinn/offsets/?date=2015-09-07T11%3A20%3A09Z"
        
      ,
      "base_offset_min": 120,
      "dst_offset_min": 60,
      "end_time": "2015-10-25T01:00:00Z",
      "short_name": "EEST",
      "total_offset_min": 180,
      "transition_time": "2015-03-29T01:00:00Z"
    
  ,
  "_links": 
    "self": 
      "href": "https://api.teleport.org/api/timezones/iana:Europe%2FTallinn/"
    ,
    "tz:offsets": 
      "href": "https://api.teleport.org/api/timezones/iana:Europe%2FTallinn/offsets/?date",
      "templated": true
    ,
    "tz:offsets-now": 
      "href": "https://api.teleport.org/api/timezones/iana:Europe%2FTallinn/offsets/?date=2015-09-07T11%3A20%3A09Z"
    
  ,
  "iana_name": "Europe/Tallinn"

对于我使用 ./jq 进行 JSON 解析的示例。

【讨论】:

感谢分享。它是在做最近城市的方法,还是在使用多边形内的方法? (参见我上面两个正方形的图表。) 嗨 Joonathan,这是我第一次在 json 中看到像你这样的对象或数组名称,例如这个:“location:nearest-cities”:[以后如何才能得到结果? $city = $data->_embedded->location:nearest->cities[0]->_links->location:nearest->cities->name 这是不允许的【参考方案4】:

下面介绍了如何使用 Google 的脚本编辑器在 gsheet 中获取 timezoneName 和 timeZoneId。

第 1 步。Get an API key 用于 Google 的时区 API

第 2 步。创建一个新的 gsheet。在“工具”菜单下单击“脚本编辑器”。添加以下代码:

function getTimezone(lat, long)   
  var apiKey = 'INSERTAPIKEYHERE'
  var url = 'https://maps.googleapis.com/maps/api/timezone/json?location=' + lat + ',' + long + '&timestamp=1331161200&key=' + apiKey 
  var response = UrlFetchApp.fetch(url);
  var data = JSON.parse(response.getContentText());
  return data["timeZoneName"];

第 3 步。保存并发布您的 getTimezone() 函数并使用它,如上图所示。

【讨论】:

【参考方案5】:

您可以使用geolocator.js 轻松获取时区等等...

它使用需要密钥的 Google API。所以,首先你配置地理定位器:

geolocator.config(
    language: "en",
    google: 
        version: "3",
        key: "YOUR-GOOGLE-API-KEY"
    
);

如果您有坐标,请获取 TimeZone:

geolocator.getTimeZone(options, function (err, timezone) 
    console.log(err || timezone);
);

示例输出:


    id: "Europe/Paris",
    name: "Central European Standard Time",
    abbr: "CEST",
    dstOffset: 0,
    rawOffset: 3600,
    timestamp: 1455733120

定位然后获取 TimeZone 等等

如果没有坐标,可以先定位用户位置。

下面的示例将首先尝试 html5 Geolocation API 来获取坐标。如果失败或被拒绝,它将通过 Geo-IP 查找获得坐标。最后,它会得到时区等等...

var options = 
    enableHighAccuracy: true,
    timeout: 6000,
    maximumAge: 0,
    desiredAccuracy: 30,
    fallbackToIP: true, // if HTML5 fails or rejected
    addressLookup: true, // this will get full address information
    timezone: true,
    map: "my-map" // this will even create a map for you
;
geolocator.locate(options, function (err, location) 
    console.log(err || location);
);

示例输出:


    coords: 
        latitude: 37.4224764,
        longitude: -122.0842499,
        accuracy: 30,
        altitude: null,
        altitudeAccuracy: null,
        heading: null,
        speed: null
    ,
    address: 
        commonName: "",
        street: "Amphitheatre Pkwy",
        route: "Amphitheatre Pkwy",
        streetNumber: "1600",
        neighborhood: "",
        town: "",
        city: "Mountain View",
        region: "Santa Clara County",
        state: "California",
        stateCode: "CA",
        postalCode: "94043",
        country: "United States",
        countryCode: "US"
    ,
    formattedAddress: "1600 Amphitheatre Parkway, Mountain View, CA 94043, USA",
    type: "ROOFTOP",
    placeId: "ChIJ2eUgeAK6j4ARbn5u_wAGqWA",
    timezone: 
        id: "America/Los_Angeles",
        name: "Pacific Standard Time",
        abbr: "PST",
        dstOffset: 0,
        rawOffset: -28800
    ,
    flag: "//cdnjs.cloudflare.com/ajax/libs/flag-icon-css/2.3.1/flags/4x3/us.svg",
    map: 
        element: HTMLElement,
        instance: Object, // google.maps.Map
        marker: Object, // google.maps.Marker
        infoWindow: Object, // google.maps.InfoWindow
        options: Object // map options
    ,
    timestamp: 1456795956380

【讨论】:

【参考方案6】:

https://en.wikipedia.org/wiki/Great-circle_distance

这是一个使用 JSON 数据的良好实现: https://github.com/agap/llttz

public TimeZone nearestTimeZone(Location node) 
    double bestDistance = Double.MAX_VALUE;
    Location bestGuess = timeZones.get(0);

    for (Location current : timeZones.subList(1, timeZones.size())) 
        double newDistance = distanceInKilometers(node, current);

        if (newDistance < bestDistance) 
            bestDistance = newDistance;
            bestGuess = current;
        
    

    return java.util.TimeZone.getTimeZone(bestGuess.getZone());


  protected double distanceInKilometers(final double latFrom, final double lonFrom, final double latTo, final double lonTo) 
        final double meridianLength = 111.1;
        return meridianLength * centralAngle(latFrom, lonFrom, latTo, lonTo);
    

    protected double centralAngle(final Location from, final Location to) 
        return centralAngle(from.getLatitude(), from.getLongitude(), to.getLatitude(), to.getLongitude());
    

    protected double centralAngle(final double latFrom, final double lonFrom, final double latTo, final double lonTo) 
        final double latFromRad = toRadians(latFrom),
                lonFromRad = toRadians(lonFrom),
                latToRad   = toRadians(latTo),
                lonToRad   = toRadians(lonTo);

        final double centralAngle = toDegrees(acos(sin(latFromRad) * sin(latToRad) + cos(latFromRad) * cos(latToRad) * cos(lonToRad - lonFromRad)));

        return centralAngle <= 180.0 ? centralAngle : (360.0 - centralAngle);
    

    protected double distanceInKilometers(final Location from, final Location to) 
        return distanceInKilometers(from.getLatitude(), from.getLongitude(), to.getLatitude(), to.getLongitude());
    

【讨论】:

您还可以从链接中添加一些内容吗?【参考方案7】:

认识到这是一个比大多数人想象的更复杂的问题确实很重要。在实践中,我们中的许多人也愿意接受一组适用于“尽可能多的情况”的工作代码,其中至少可以识别和最小化其致命问题。因此,我在发布此内容时考虑了所有这些以及 OP 的精神。最后,对于那些试图将 GPS 转换为时区并最终目标是拥有一个对位置敏感的时间对象(更重要的是帮助提高来自本 wiki 的时间对象的平均实现质量)的其他人来说,这里是我在 Python 中生成的内容(请随意编辑):

import pytz
from datetime import datetime
from tzwhere import tzwhere

def timezoned_unixtime(latitude, longitude, dt):
    tzw = tzwhere.tzwhere()
    timezone_str = tzw.tzNameAt(latitude, longitude)
    timezone = pytz.timezone(timezone_str)
    timezone_aware_datetime = timezone.localize(dt, is_dst=None)
    unix_time = (timezone_aware_datetime - datetime(1970, 1, 1, tzinfo=pytz.utc)).total_seconds()
    return unix_time

dt = datetime(year=2017, month=1, day=17, hour=12, minute=0, second=0)
print timezoned_unixtime(latitude=40.747854, longitude=-74.004733, dt=dt)

【讨论】:

谢谢,但这看起来像是一些使用 pytzwhere 的代码,它已经列在主要社区 wiki 答案中。如果您打算提供如何将 pytzwhere 与 pytz 结合使用的示例,您可能希望将其作为 PR 提交给 pytzwhere 项目本身。在这里,我们只是在寻找经纬度到 tz 的解决方案 - 其中 pytzwhere 就是其中之一。【参考方案8】:

    有几个在线来源提供时区的 geojson 数据(here's one、here's 另一个)

    使用几何库从 geojson 坐标创建多边形对象(shapely [python]、GEOS [c++]、JTS [java]、NTS [.net])。

    将您的 lat/lng 转换为点对象(但您的库表示该对象)并检查它是否与时区多边形相交。

    from shapely.geometry import Polygon, Point
    
    def get_tz_from_lat_lng(lat, lng):
        for tz, geojson in timezones.iteritems():
            coordinates = geojson['features'][0]['geometry']['coordinates']
            polygon = Polygon(coordinates)
            point = Point(lng, lat)
            if polygon.contains(point):
                return tz
    

【讨论】:

【参考方案9】:

披露:我是下面描述的 docker-image 的作者

我已经将https://github.com/evansiroky/node-geo-tz 包装在一个非常简单的 docker-container 中

https://hub.docker.com/repository/docker/tobias74/timezone-lookup

你可以使用 docker-container 来启动

docker run -p 80:3000 tobias74/timezone-lookup:latest

这会在 localhost 的 3000 端口上公开查找服务。然后您可以通过

进行时区查找
curl "localhost:3000/timezone?latitude=12&longitude=34"

【讨论】:

【参考方案10】:

尝试此代码以使用 Java 中的 Google Time Zone API 与当前 NTP 时间客户端并正确 UTC_Datetime_from_timestamp 转换:

String get_xml_server_reponse(String server_url)

    URL xml_server = null;

    String xmltext = "";

    InputStream input;


    try 
        xml_server = new URL(server_url);


        try 
            input = xml_server.openConnection().getInputStream();


            final BufferedReader reader = new BufferedReader(new InputStreamReader(input));
            final StringBuilder sBuf = new StringBuilder();

            String line = null;
            try 
                while ((line = reader.readLine()) != null) 
                
                    sBuf.append(line);
                
                
            catch (IOException e) 
              
                    Log.e(e.getMessage(), "XML parser, stream2string 1");
               
            finally 
                try 
                    input.close();
                    
                catch (IOException e) 
                
                    Log.e(e.getMessage(), "XML parser, stream2string 2");
                
            

            xmltext =  sBuf.toString();

         catch (IOException e1) 

                e1.printStackTrace();
            


         catch (MalformedURLException e1) 

          e1.printStackTrace();
        

     return  xmltext;

       


 private String get_UTC_Datetime_from_timestamp(long timeStamp)

    try

        Calendar cal = Calendar.getInstance();
        TimeZone tz = cal.getTimeZone();

        int tzt = tz.getOffset(System.currentTimeMillis());

        timeStamp -= tzt;

        // DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss",Locale.getDefault());
        DateFormat sdf = new SimpleDateFormat();
        Date netDate = (new Date(timeStamp));
        return sdf.format(netDate);
    
    catch(Exception ex)
        return "";
     
     

 class NTP_UTC_Time
 
     private static final String TAG = "SntpClient";

     private static final int RECEIVE_TIME_OFFSET = 32;
     private static final int TRANSMIT_TIME_OFFSET = 40;
     private static final int NTP_PACKET_SIZE = 48;

     private static final int NTP_PORT = 123;
     private static final int NTP_MODE_CLIENT = 3;
     private static final int NTP_VERSION = 3;

     // Number of seconds between Jan 1, 1900 and Jan 1, 1970
     // 70 years plus 17 leap days
     private static final long OFFSET_1900_TO_1970 = ((365L * 70L) + 17L) * 24L * 60L * 60L;

     private long mNtpTime;

     public boolean requestTime(String host, int timeout) 
         try 
             DatagramSocket socket = new DatagramSocket();
             socket.setSoTimeout(timeout);
             InetAddress address = InetAddress.getByName(host);
             byte[] buffer = new byte[NTP_PACKET_SIZE];
             DatagramPacket request = new DatagramPacket(buffer, buffer.length, address, NTP_PORT);

             buffer[0] = NTP_MODE_CLIENT | (NTP_VERSION << 3);

             writeTimeStamp(buffer, TRANSMIT_TIME_OFFSET);

             socket.send(request);

             // read the response
             DatagramPacket response = new DatagramPacket(buffer, buffer.length);
             socket.receive(response);          
             socket.close();

             mNtpTime = readTimeStamp(buffer, RECEIVE_TIME_OFFSET);            
          catch (Exception e) 
           //  if (Config.LOGD) Log.d(TAG, "request time failed: " + e);
             return false;
         

         return true;
     


     public long getNtpTime() 
         return mNtpTime;
     


     /**
      * Reads an unsigned 32 bit big endian number from the given offset in the buffer.
      */
     private long read32(byte[] buffer, int offset) 
         byte b0 = buffer[offset];
         byte b1 = buffer[offset+1];
         byte b2 = buffer[offset+2];
         byte b3 = buffer[offset+3];

         // convert signed bytes to unsigned values
         int i0 = ((b0 & 0x80) == 0x80 ? (b0 & 0x7F) + 0x80 : b0);
         int i1 = ((b1 & 0x80) == 0x80 ? (b1 & 0x7F) + 0x80 : b1);
         int i2 = ((b2 & 0x80) == 0x80 ? (b2 & 0x7F) + 0x80 : b2);
         int i3 = ((b3 & 0x80) == 0x80 ? (b3 & 0x7F) + 0x80 : b3);

         return ((long)i0 << 24) + ((long)i1 << 16) + ((long)i2 << 8) + (long)i3;
     

     /**
      * Reads the NTP time stamp at the given offset in the buffer and returns 
      * it as a system time (milliseconds since January 1, 1970).
      */    
     private long readTimeStamp(byte[] buffer, int offset) 
         long seconds = read32(buffer, offset);
         long fraction = read32(buffer, offset + 4);
         return ((seconds - OFFSET_1900_TO_1970) * 1000) + ((fraction * 1000L) / 0x100000000L);        
     

     /**
      * Writes 0 as NTP starttime stamp in the buffer. --> Then NTP returns Time OFFSET since 1900
      */    
     private void writeTimeStamp(byte[] buffer, int offset)         
         int ofs =  offset++;

         for (int i=ofs;i<(ofs+8);i++)
           buffer[i] = (byte)(0);             
     

 

 String get_time_zone_time(GeoPoint gp)

        String erg = "";
        String raw_offset = "";
        String dst_offset = "";

        double Longitude = gp.getLongitudeE6()/1E6;
        double Latitude = gp.getLatitudeE6()/1E6;



        long tsLong = 0; // System.currentTimeMillis()/1000;

        NTP_UTC_Time client = new NTP_UTC_Time();

        if (client.requestTime("pool.ntp.org", 2000))               
          tsLong = client.getNtpTime();
        

        if (tsLong != 0)
        

        tsLong = tsLong  / 1000;

        // https://maps.googleapis.com/maps/api/timezone/xml?location=39.6034810,-119.6822510&timestamp=1331161200&sensor=false

        String request = "https://maps.googleapis.com/maps/api/timezone/xml?location="+Latitude+","+ Longitude+ "&timestamp="+tsLong +"&sensor=false";

        String xmltext = get_xml_server_reponse(request);

        if(xmltext.compareTo("")!= 0)
        

         int startpos = xmltext.indexOf("<TimeZoneResponse");
         xmltext = xmltext.substring(startpos);



        XmlPullParser parser;
        try 
            parser = XmlPullParserFactory.newInstance().newPullParser();


             parser.setInput(new StringReader (xmltext));

             int eventType = parser.getEventType();  

             String tagName = "";


             while(eventType != XmlPullParser.END_DOCUMENT) 
                 switch(eventType) 

                     case XmlPullParser.START_TAG:

                           tagName = parser.getName();

                         break;


                     case XmlPullParser.TEXT :


                        if  (tagName.equalsIgnoreCase("raw_offset"))
                          if(raw_offset.compareTo("")== 0)                               
                            raw_offset = parser.getText();  

                        if  (tagName.equalsIgnoreCase("dst_offset"))
                          if(dst_offset.compareTo("")== 0)
                            dst_offset = parser.getText();  


                        break;   

                 

                 try 
                        eventType = parser.next();
                     catch (IOException e) 

                        e.printStackTrace();
                    

                

                 catch (XmlPullParserException e) 

                    e.printStackTrace();
                    erg += e.toString();
                

              

        int ro = 0;
        if(raw_offset.compareTo("")!= 0)
         
            float rof = str_to_float(raw_offset);
            ro = (int)rof;
        

        int dof = 0;
        if(dst_offset.compareTo("")!= 0)
         
            float doff = str_to_float(dst_offset);
            dof = (int)doff;
        

        tsLong = (tsLong + ro + dof) * 1000;



        erg = get_UTC_Datetime_from_timestamp(tsLong);
        


  return erg;


并将其用于:

GeoPoint gp = new GeoPoint(39.6034810,-119.6822510);
String Current_TimeZone_Time = get_time_zone_time(gp);

【讨论】:

这似乎是一个简单任务的大量代码。您在那里有一个完整的 NTP 客户端,这可能是个好主意 - 但不一定是必需的。能瘦一点吗?【参考方案11】:

好的,这里是没有正确 NTP 时间的简短版本:

String get_xml_server_reponse(String server_url)

URL xml_server = null;

String xmltext = "";

InputStream input;


try 
    xml_server = new URL(server_url);


    try 
        input = xml_server.openConnection().getInputStream();


        final BufferedReader reader = new BufferedReader(new InputStreamReader(input));
        final StringBuilder sBuf = new StringBuilder();

        String line = null;
        try 
            while ((line = reader.readLine()) != null) 
            
                sBuf.append(line);
            
            
        catch (IOException e) 
          
                Log.e(e.getMessage(), "XML parser, stream2string 1");
           
        finally 
            try 
                input.close();
                
            catch (IOException e) 
            
                Log.e(e.getMessage(), "XML parser, stream2string 2");
            
        

        xmltext =  sBuf.toString();

     catch (IOException e1) 

            e1.printStackTrace();
        


     catch (MalformedURLException e1) 

      e1.printStackTrace();
    

 return  xmltext;

 


long get_time_zone_time_l(GeoPoint gp)


        String raw_offset = "";
        String dst_offset = "";

        double Longitude = gp.getLongitudeE6()/1E6;
        double Latitude = gp.getLatitudeE6()/1E6;

        long tsLong = System.currentTimeMillis()/1000;


        if (tsLong != 0)
        

        // https://maps.googleapis.com/maps/api/timezone/xml?location=39.6034810,-119.6822510&timestamp=1331161200&sensor=false

        String request = "https://maps.googleapis.com/maps/api/timezone/xml?location="+Latitude+","+ Longitude+ "&timestamp="+tsLong +"&sensor=false";

        String xmltext = get_xml_server_reponse(request);

        if(xmltext.compareTo("")!= 0)
        

         int startpos = xmltext.indexOf("<TimeZoneResponse");
         xmltext = xmltext.substring(startpos);



        XmlPullParser parser;
        try 
            parser = XmlPullParserFactory.newInstance().newPullParser();


             parser.setInput(new StringReader (xmltext));

             int eventType = parser.getEventType();  

             String tagName = "";


             while(eventType != XmlPullParser.END_DOCUMENT) 
                 switch(eventType) 

                     case XmlPullParser.START_TAG:

                           tagName = parser.getName();

                         break;


                     case XmlPullParser.TEXT :


                        if  (tagName.equalsIgnoreCase("raw_offset"))
                          if(raw_offset.compareTo("")== 0)                               
                            raw_offset = parser.getText();  

                        if  (tagName.equalsIgnoreCase("dst_offset"))
                          if(dst_offset.compareTo("")== 0)
                            dst_offset = parser.getText();  


                        break;   

                 

                 try 
                        eventType = parser.next();
                     catch (IOException e) 

                        e.printStackTrace();
                    

                

                 catch (XmlPullParserException e) 

                    e.printStackTrace();
                    erg += e.toString();
                

              

        int ro = 0;
        if(raw_offset.compareTo("")!= 0)
         
            float rof = str_to_float(raw_offset);
            ro = (int)rof;
        

        int dof = 0;
        if(dst_offset.compareTo("")!= 0)
         
            float doff = str_to_float(dst_offset);
            dof = (int)doff;
        

        tsLong = (tsLong + ro + dof) * 1000;


        


  return tsLong;


并将其用于:

GeoPoint gp = new GeoPoint(39.6034810,-119.6822510);
long Current_TimeZone_Time_l = get_time_zone_time_l(gp);

【讨论】:

【参考方案12】:

如果您想使用 geonames.org,请使用此代码。 (但 geonames.org 有时很慢)

String get_time_zone_time_geonames(GeoPoint gp)


        String erg = "";

        double Longitude = gp.getLongitudeE6()/1E6;
        double Latitude = gp.getLatitudeE6()/1E6;



        String request = "http://ws.geonames.org/timezone?lat="+Latitude+"&lng="+ Longitude+ "&style=full";

        URL time_zone_time = null;

        InputStream input;
       // final StringBuilder sBuf = new StringBuilder();


        try 
            time_zone_time = new URL(request);


        try 
            input = time_zone_time.openConnection().getInputStream();


        final BufferedReader reader = new BufferedReader(new InputStreamReader(input));
            final StringBuilder sBuf = new StringBuilder();

            String line = null;
            try 
                while ((line = reader.readLine()) != null) 
                    sBuf.append(line);
                
             catch (IOException e) 
                    Log.e(e.getMessage(), "XML parser, stream2string 1");
             finally 
                try 
                    input.close();
                 catch (IOException e) 
                    Log.e(e.getMessage(), "XML parser, stream2string 2");
                
            




             String xmltext = sBuf.toString();


             int startpos = xmltext.indexOf("<geonames");
             xmltext = xmltext.substring(startpos);



            XmlPullParser parser;
            try 
                parser = XmlPullParserFactory.newInstance().newPullParser();


            parser.setInput(new StringReader (xmltext));

            int eventType = parser.getEventType();  

            String tagName = "";

            while(eventType != XmlPullParser.END_DOCUMENT) 
                switch(eventType) 

                    case XmlPullParser.START_TAG:

                          tagName = parser.getName();

                        break;


                    case XmlPullParser.TEXT :


                        if  (tagName.equalsIgnoreCase("time"))
                          erg = parser.getText();  


                    break;   

                

                try 
                    eventType = parser.next();
                 catch (IOException e) 

                    e.printStackTrace();
                

            

             catch (XmlPullParserException e) 

                e.printStackTrace();
                erg += e.toString();
            



             catch (IOException e1) 

                e1.printStackTrace();
            


             catch (MalformedURLException e1) 

                e1.printStackTrace();
            





        return erg;

 

并将其用于:

GeoPoint gp = new GeoPoint(39.6034810,-119.6822510);
String Current_TimeZone_Time = get_time_zone_time_geonames(gp);

【讨论】:

【参考方案13】:

来自孔雀鱼:

import geocoders
g = geocoders.GoogleV3()
place, (lat, lng) = g.geocode('Fairbanks')
print place, (lat, lng)
Fairbanks, AK, USA (64.8377778, -147.7163889)
timezone = g.timezone((lat, lng))
print timezone.dst

绑定方法America/Anchorage.dstDstTzInfo

美国/安克雷奇的 LMT-1 天,标准时间 14:00:00

【讨论】:

我认为 Guppy 是一个错字。你的意思是Geopy 还是别的什么?【参考方案14】:

通过使用纬度和经度获取下面代码为我工作的当前位置的时区

String data = null;         
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Location ll = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
double lat = 0,lng = 0;
if(ll!=null)
    lat=ll.getLatitude();
    lng=ll.getLongitude();

System.out.println(" Last known location of device  == "+lat+"    "+lng);

InputStream iStream = null; 
HttpURLConnection urlConnection = null;
try
    timezoneurl = timezoneurl+"location=22.7260783,75.8781553&timestamp=1331161200";                    
    // timezoneurl = timezoneurl+"location="+lat+","+lng+"&timestamp=1331161200";

    URL url = new URL(timezoneurl);                
    // Creating an http connection to communicate with url 
    urlConnection = (HttpURLConnection) url.openConnection(); 

    // Connecting to url 
    urlConnection.connect();                

    // Reading data from url 
    iStream = urlConnection.getInputStream();

    BufferedReader br = new BufferedReader(new InputStreamReader(iStream));

    StringBuffer sb  = new StringBuffer();
    String line = "";
    while( ( line = br.readLine())  != null)
        sb.append(line);
    
    data = sb.toString();
    br.close();

catch(Exception e)
    Log.d("Exception while downloading url", e.toString());
finally
    try 
        iStream.close();
     catch (IOException e) 
        // TODO Auto-generated catch block
        e.printStackTrace();
    
    urlConnection.disconnect();


try 
    if(data!=null)
        JSONObject jobj=new JSONObject(data);
        timezoneId = jobj.getString("timeZoneId");

        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        format.setTimeZone(TimeZone.getTimeZone(timezoneId));

        Calendar cl = Calendar.getInstance(TimeZone.getTimeZone(timezoneId));
        System.out.println("time zone id in android ==  "+timezoneId);

        System.out.println("time zone of  device in android == "+TimeZone.getTimeZone(timezoneId));
        System.out.println("time fo device in android "+cl.getTime());
    
 catch (Exception e) 
    // TODO Auto-generated catch block
    e.printStackTrace();

【讨论】:

您在呼叫哪个服务?您真的想与我们分享您的密钥吗??【参考方案15】:

对于我们这些使用 Javascript 并希望通过 Google API 从邮政编码获取时区的人,这是一种方法。

    通过地理位置获取 lat/lng 获取时区 进入timezone API。 在这里使用Luxon 进行时区转换。

注意:我的理解是邮政编码在不同国家/地区并不是唯一的,因此这可能最适合在美国使用。

const googleMapsClient; // instantiate your client here
const zipcode = '90210'
const myDateThatNeedsTZAdjustment; // define your date that needs adjusting
// fetch lat/lng from google api by zipcode
const geocodeResponse = await googleMapsClient.geocode( address: zipcode ).asPromise();
if (geocodeResponse.json.status === 'OK') 
  lat = geocodeResponse.json.results[0].geometry.location.lat;
  lng = geocodeResponse.json.results[0].geometry.location.lng;
 else 
  console.log('Geocode was not successful for the following reason: ' + status);


// prepare lat/lng and timestamp of profile created_at to fetch time zone
const location = `$lat,$lng`;
const timestamp = new Date().valueOf() / 1000;
const timezoneResponse = await googleMapsClient
  .timezone( location: location, timestamp: timestamp )
  .asPromise();

const timeZoneId = timezoneResponse.json.timeZoneId;
// adjust by setting timezone
const timezoneAdjustedDate = DateTime.fromJSDate(
  myDateThatNeedsTZAdjustment
).setZone(timeZoneId);

【讨论】:

【参考方案16】:

如果您不想使用 Web 服务,您可以从浏览器中检索该信息,如下所示:

var d = new Date();
var usertime = d.toLocaleString();

//some browsers / OSs provide the timezone name in their local string
var tzsregex = /\b(ACDT|ACST|ACT|ADT|AEDT|AEST|AFT|AKDT|AKST|AMST|AMT|ART|AST|AWDT|AWST|AZOST|AZT|BDT|BIOT|BIT|BOT|BRT|BST|BTT|CAT|CCT|CDT|CEDT|CEST|CET|CHADT|CHAST|CIST|CKT|CLST|CLT|COST|COT|CST|CT|CVT|CXT|CHST|DFT|EAST|EAT|ECT|EDT|EEDT|EEST|EET|EST|FJT|FKST|FKT|GALT|GET|GFT|GILT|GIT|GMT|GST|GYT|HADT|HAEC|HAST|HKT|HMT|HST|ICT|IDT|IRKT|IRST|IST|JST|KRAT|KST|LHST|LINT|MART|MAGT|MDT|MET|MEST|MIT|MSD|MSK|MST|MUT|MYT|NDT|NFT|NPT|NST|NT|NZDT|NZST|OMST|PDT|PETT|PHOT|PKT|PST|RET|SAMT|SAST|SBT|SCT|SGT|SLT|SST|TAHT|THA|UYST|UYT|VET|VLAT|WAT|WEDT|WEST|WET|WST|YAKT|YEKT)\b/gi;

//in other browsers the timezone needs to be estimated based on the offset
var timezonenames = "UTC+0":"GMT","UTC+1":"CET","UTC+2":"EET","UTC+3":"EEDT","UTC+3.5":"IRST","UTC+4":"MSD","UTC+4.5":"AFT","UTC+5":"PKT","UTC+5.5":"IST","UTC+6":"BST","UTC+6.5":"MST","UTC+7":"THA","UTC+8":"AWST","UTC+9":"AWDT","UTC+9.5":"ACST","UTC+10":"AEST","UTC+10.5":"ACDT","UTC+11":"AEDT","UTC+11.5":"NFT","UTC+12":"NZST","UTC-1":"AZOST","UTC-2":"GST","UTC-3":"BRT","UTC-3.5":"NST","UTC-4":"CLT","UTC-4.5":"VET","UTC-5":"EST","UTC-6":"CST","UTC-7":"MST","UTC-8":"PST","UTC-9":"AKST","UTC-9.5":"MIT","UTC-10":"HST","UTC-11":"SST","UTC-12":"BIT";

var timezone = usertime.match(tzsregex);
if (timezone) 
    timezone = timezone[timezone.length-1];
 else 
    var offset = -1*d.getTimezoneOffset()/60;
    offset = "UTC" + (offset >= 0 ? "+" + offset : offset);
    timezone = timezonenames[offset];


//there are 3 variables can use to see the timezone
// usertime - full date
// offset - UTC offset time
// timezone - country

console.log('Full Date: ' + usertime);
console.log('UTC Offset: ' + offset);
console.log('Country Code Timezone: ' + timezone);

在我目前的情况下,它正在打印:

完整日期: ‎27‎/‎01‎/‎2014‎ ‎16‎:‎53‎:‎37 UTC 偏移量: UTC-3 国家代码时区: BRT

希望对您有所帮助。

【讨论】:

虽然我感谢您为此付出了一些努力,但请注意:1) 时区不是固定偏移量 2) 时区缩写不是标准化或唯一标识符 3) 这已经完成了,还有更多准确地说,是jsTimeZoneDetect。 4)您的答案与问题不符。问题是如何从纬度和经度坐标确定时区。【参考方案17】:

  function jsonpRequest(url, data)

    let params = "";
    for (let key in data)
    
        if (data.hasOwnProperty(key))
        
            if (params.length == 0)
            
                params += "?";
            
            else
            
                params += "&";
            
            let encodedKey = encodeURIComponent(key);
            let encodedValue = encodeURIComponent(data[key]);
            params += encodedKey + "=" + encodedValue;
         
    
    let script = document.createElement('script');
    script.src = url + params;
    document.body.appendChild(script);


function getLocation() 
  if (navigator.geolocation) 
    navigator.geolocation.getCurrentPosition(showPosition);
   else 
    x.innerHTML = "Geolocation is not supported by this browser.";
  

let lat_ini=[]; let lon_ini=[];
function showPosition(position) 
  lat_ini= position.coords.latitude;
  lon_ini= position.coords.longitude;

////delay time between lines
function sleep(ms) 
  return new Promise(resolve => setTimeout(resolve, ms));

///////
function getGMT()

  getfinalGMT()
  getLocation()
  async function sample() 
    await sleep(2000);
let lat_str=lat_ini.toString();
let lng_str=" "+lon_ini.toString();

  let url = "https://api.opencagedata.com/geocode/v1/json";
  let data = 
    callback: "displayGMT",
    q: lat_str + lng_str,
    key: "fac4471073a347019196c1291e6a97d7"
  
  jsonpRequest(url, data)

 sample();
 
let your_GMT=[];
function displayGMT(data)

your_GMT=(Number(data.results[0].annotations.timezone.offset_string))
console.log(your_GMT)

/////
function getfinalGMT()

let lat=document.getElementById("lat_id").value; let lng=document.getElementById("lng_id").value;
let lat_str=lat.toString();
let lng_str=" "+lng.toString();

  let url = "https://api.opencagedata.com/geocode/v1/json";
  let data = 
    callback: "displayfinalGMT",
    q: lat + lng_str,
    key: "fac4471073a347019196c1291e6a97d7"
  
  jsonpRequest(url, data)
 
let final_GMT=[];
function displayfinalGMT(data)

final_GMT=(Number(data.results[0].annotations.timezone.offset_string))
console.log(final_GMT)

/////clock


const hourHand = document.querySelector('[data-hour-hand]')
const minuteHand = document.querySelector('[data-minute-hand]')
const secondHand = document.querySelector('[data-second-hand]')
  let dif_overall=[];
function setClock() 
   let gmt_diff=Number(your_GMT-final_GMT)/100
   if (gmt_diff>12)
      dif_overall=gmt_diff-12
   
   else
     dif_overall=gmt_diff
   
    console.log(dif_overall)
  const currentDate = new Date()
  const secondsRatio = currentDate.getSeconds() / 60
  const minutesRatio = (secondsRatio + currentDate.getMinutes()) / 60
  const hoursRatio = (minutesRatio + currentDate.getHours() - dif_overall ) / 12
  setRotation(secondHand, secondsRatio)
  setRotation(minuteHand, minutesRatio)
  setRotation(hourHand, hoursRatio)


function setRotation(element, rotationRatio) 
  element.style.setProperty('--rotation', rotationRatio * 360)

function activate_clock()
setClock()
setInterval(setClock, 1000)
*, *::after, *::before 
  box-sizing: border-box;


body 
  background: linear-gradient(to right, hsl(200, 100%, 50%), hsl(175, 100%, 50%));
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;


.clock 
  width: 200px;
  height: 200px;
  background-color: rgba(255, 255, 255, .8);
  border-radius: 50%;
  border: 2px solid black;
  position: relative;


.clock .number 
  --rotation: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  text-align: center;
  transform: rotate(var(--rotation));
  font-size: 1.5rem;


.clock .number1  --rotation: 30deg; 
.clock .number2  --rotation: 60deg; 
.clock .number3  --rotation: 90deg; 
.clock .number4  --rotation: 120deg; 
.clock .number5  --rotation: 150deg; 
.clock .number6  --rotation: 180deg; 
.clock .number7  --rotation: 210deg; 
.clock .number8  --rotation: 240deg; 
.clock .number9  --rotation: 270deg; 
.clock .number10  --rotation: 300deg; 
.clock .number11  --rotation: 330deg; 

.clock .hand 
  --rotation: 0;
  position: absolute;
  bottom: 50%;
  left: 50%;
  border: 1px solid white;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  transform-origin: bottom;
  z-index: 10;
  transform: translateX(-50%) rotate(calc(var(--rotation) * 1deg));


.clock::after 
  content: '';
  position: absolute;
  background-color: black;
  z-index: 11;
  width: 15px;
  height: 15px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;


.clock .hand.second 
  width: 3px;
  height: 45%;
  background-color: red;


.clock .hand.minute 
  width: 7px;
  height: 40%;
  background-color: black;


.clock .hand.hour 
  width: 10px;
  height: 35%;
  background-color: black;















/* Background Styles Only */

@import url('https://fonts.googleapis.com/css?family=Raleway');

* 
    font-family: Raleway;


.side-links 
  position: absolute;
  top: 15px;
  right: 15px;


.side-link 
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  margin-bottom: 10px;
  color: white;
  width: 180px;
  padding: 10px 0;
  border-radius: 10px;


.side-link-youtube 
  background-color: red;


.side-link-twitter 
  background-color: #1DA1F2;


.side-link-github 
  background-color: #6e5494;


.side-link-text 
  margin-left: 10px;
  font-size: 18px;


.side-link-icon 
  color: white;
  font-size: 30px;
   <input type="text" id="lat_id" placeholder="lat"><br><br>
  <input type="text" id="lng_id" placeholder="lng"><br><br>
<button class="text" onClick="getLocation()">Location</button>
<button class="text" onClick="getGMT()"> GMT</button>
<button class="text" onClick="activate_clock()"> Activate</button>
<div class="clock">
  <div class="hand hour" data-hour-hand></div>
  <div class="hand minute" data-minute-hand></div>
  <div class="hand second" data-second-hand></div>
  <div class="number number1">1</div>
  <div class="number number2">2</div>
  <div class="number number3">3</div>
  <div class="number number4">4</div>
  <div class="number number5">5</div>
  <div class="number number6">6</div>
  <div class="number number7">7</div>
  <div class="number number8">8</div>
  <div class="number number9">9</div>
  <div class="number number10">10</div>
  <div class="number number11">11</div>
  <div class="number number12">12</div>
</div>

【讨论】:

伙计们,您必须将代码复制并粘贴到新浏览器中,因为代码 sn-p 不允许我们提示用户的位置 希望大家欣赏 输入 lat 和 lng 后,按位置,GMT 然后激活时钟 我真的不认为您打算与我们共享您的 API 密钥到 opencagedata,是吗?您可以简单地描述这个 API,而不是转储代码。 好吧,有些人只需要看一个api的回调函数示例就可以更好地理解

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