如何使用纬度和经度坐标从某个位置获取时区?
Posted
技术标签:
【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】:2019-09-08 21:34:39 【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,伦敦的长/纬度不足以确定时区是 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。
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,200 个请求为 1 美元。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 + '×tamp=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】:
你能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×tamp=1331161200&sensor=false
String request = "https://maps.googleapis.com/maps/api/timezone/xml?location="+Latitude+","+ Longitude+ "×tamp="+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×tamp=1331161200&sensor=false
String request = "https://maps.googleapis.com/maps/api/timezone/xml?location="+Latitude+","+ Longitude+ "×tamp="+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.dst
的DstTzInfo
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×tamp=1331161200";
// timezoneurl = timezoneurl+"location="+lat+","+lng+"×tamp=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各个国家/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的浏览器中,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以上是关于如何使用纬度和经度坐标从某个位置获取时区?的主要内容,如果未能解决你的问题,请参考以下文章