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,尽管某些服务可能只返回 UTC 偏移量或其他一些时区标识符。请阅读timezone tag info了解详情。
"Europe/London"
时区标识符中。
Europe/Astrakhan
,它使用 tzdb 2016b 从 Europe/Volgograd
中分离出来。
时区定位网络服务
谷歌地图时区 API
必应地图时区 API
Azure 地图时区 API
GeoNames 时区 API
时区数据库 API
AskGeo - 商业(但可以说比 GeoNames 更准确)
GeoGarage Time Zone API - 商业,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
使用时区边界生成器数据的实现
node-geo-tz - JavaScript 库(仅限 Node.js)
时间空间 - JavaScript 库
tz-lookup-oss - JavaScript 库
GeoTimeZone - .NET 库
地理时区 - PHP 库
timezonefinder - Python 库
ZoneDetect - C 库
时间形状 - Java 库
TimeZoneMap - Java 和 Android 库
lutz - R 库
go-tz -Go 库
时区查找 - Go 库
docker-timezone-lookup - docker 容器包装 node-geo-tz
使用旧 tz_world 数据的实现
latlong - Go 库(也请阅读这篇文章。)
TimeZoneMapper - Java 库
tzwhere - JavaScript/节点库
pytzwhere - Python 库
timezone_finder - Ruby 库
LatLongToTimeZone - Java 和 Swift 库
现在几点了? - 描述 PHP 和 MongoDB 的博客文章
rundel/时区 - R 库
调用其中一种 Web 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 - 基于时区查找,可通过 Docker 映像获得
其他想法
使用 R-Tree 查找最近的城市
使用 MySQL 查找最近的城市
如果您知道任何其他人,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。该文件主要用于提供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,在许多情况下这不是正确的点。
考虑以下示例:
https://i.stack.imgur.com/tjd5u.png
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 中找到的内容。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。
这个 node.js 的解决方案怎么样https://github.com/mattbornski/tzwhere
及其 Python 对应物:https://github.com/pegler/pytzwhere
我们在 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。
下面介绍如何使用 Google 的脚本编辑器在 gsheet 中获取 timezoneName 和 timeZoneId。
https://i.stack.imgur.com/ZXmrF.png
第 1 步。Get an API key 用于 Google 的时区 API
步骤 2. 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"];
}
步骤 3. 保存并发布您的 getTimezone()
函数并如上图所示使用它。
您可以使用 geolocator.js 轻松获取时区等...
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
}
找到然后获取 TimeZone 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,它将获得时区等等......
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
}
https://en.wikipedia.org/wiki/Great-circle_distance
这是使用 JSON 数据的一个很好的实现: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());
}
}
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套适用于“尽可能多的情况”的工作代码,其中至少可以识别出致命问题并将其最小化。因此,我将所有这些内容和 OP 的精神牢记在心。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的质量)的其他人的实用价值,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)
网上有几个来源包含时区的 geojson 数据(这是一个,这是另一个) 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(但是您的库表示该对象)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'] 多边形 = Polygon(coordinates) point = Point(lng, lat) if polygon.contains(point): return tz
披露:我是下面描述的 docker-image 的作者
我已将 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
您可以使用以下命令启动 docker-container
docker run -p 80:3000 tobias74/timezone-lookup:latest
这会在端口 3000 上公开本地主机上的查找服务。然后您可以通过以下方式进行时区查找
curl "localhost:3000/timezone?latitude=12&longitude=34"
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);
好的,这是没有正确 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);
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);
来自古比:
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
DstTzInfo
的绑定方法 America/Anchorage.dst
美国/安克雷奇 LMT-1 天,标准时间 14:00:00
通过使用纬度和经度获取以下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();
}
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来说,这是一种方法。
通过地理定位获取纬度/经度通过将时区传递到时区 API 来获取时区。在此处使用 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);
如果您希望避免使用 Web 服务,则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:27/01/201416:53:37 UTC 偏移量:UTC-3 国家代码时区:BRT
希望它会有所帮助。
函数 jsonpRequest(url, data) { let params = ""; for (let key in data) { if (data.hasOwnProperty(key)) { if (params.length == 0) { params += "?"; } 其他 { 参数 += "&"; } let encodedKey = encodeURIComponent(key);让 encodeValue = encodeURIComponent(data[key]);参数+=编码键+“=”+编码值; } } let script = document.createElement('script'); script.src = 网址 + 参数; document.body.appendChild(脚本); } function getLocation() { if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(showPosition); } else { x.innerHTML = "此浏览器不支持地理位置。"; } } 让 lat_ini=[];让 lon_ini=[];函数 showPosition(position) { lat_ini= position.coords.latitude; lon_ini=位置.coords.longitude; } ////行之间的延迟时间 function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } /////// function getGMT() { getfinalGMT() getLocation() async function sample() { await sleep(2000);让 lat_str=lat_ini.toString();让 lng_str=""+lon_ini.toString();让 url = "https://api.opencagedata.com/geocode/v1/json";让数据 = { 回调:“displayGMT”,q:lat_str + lng_str,键:“fac4471073a347019196c1291e6a97d7”} jsonpRequest(url, data) } sample(); } 让 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;让 lng=document.getElementById("lng_id").value;让 lat_str=lat.toString();让 lng_str=" "+lng.toString();让 url = "https://api.opencagedata.com/geocode/v1/json";让数据= {回调:“displayfinalGMT”,q:lat + lng_str,键:“fac4471073a347019196c1291e6a97d7”}jsonpRequest(url,数据)}让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 { 背景:线性梯度(向右,hsl(200, 100%, 50%),hsl(175, 100%, 50%));显示:弯曲;证明内容:中心;对齐项目:居中;最小高度:100vh;溢出:隐藏; } .clock { 宽度:200px;高度:200px;背景色:rgba(255, 255, 255, .8);边界半径:50%;边框:2px纯黑色;位置:相对; } .clock .number { --rotation: 0;位置:绝对;宽度:100%;高度:100%;文本对齐:居中;变换:旋转(var(--rotation));字体大小:1.5rem; } .clock .number1 { --rotation: 30deg; } .clock .number2 { --rotation: 60deg; } .clock .number3 { --旋转:90度; } .clock .number4 { --旋转:120度; } .clock .number5 { --旋转:150度; } .clock .number6 { --旋转:180度; } .clock .number7 { --rotation: 210deg; } .clock .number8 { --rotation: 240deg; } .clock .number9 { --rotation: 270deg; } .clock .number10 { --rotation: 300deg; } .clock .number11 { --rotation: 330deg; } .clock .hand { --rotation: 0;位置:绝对;底部:50%;左:50%;边框:1px 纯白色;边框左上角半径:10px;边框右上角半径:10px;变换原点:底部; z 指数:10;变换: translateX(-50%) 旋转(calc(var(--rotation) * 1deg)); } .clock::after { 内容:'';位置:绝对;背景颜色:黑色; z 指数:11;宽度:15px;高度:15px;最高:50%;左:50%;变换:翻译(-50%,-50%);边界半径:50%; } .clock .hand.second { 宽度:3px;高度:45%;背景颜色:红色; } .clock .hand.minute { 宽度:7px;高度:40%;背景颜色:黑色; } .clock .hand.hour { 宽度:10px;高度:35%;背景颜色:黑色; } /* 仅背景样式 */ @import url('https://fonts.googleapis.com/css?family=Raleway'); * {字体系列:Raleway; } .side-links { 位置:绝对;顶部:15px;右:15px; } .side-link { 显示:弹性;对齐项目:居中;证明内容:中心;文字装饰:无;边距底部:10px;白颜色;宽度:180px;填充:10px 0;边框半径:10px; } .side-link-youtube { 背景颜色:红色; } .side-link-twitter { 背景颜色:#1DA1F2; } .side-link-github { 背景颜色:#6e5494; } .side-link-text { margin-left: 10px;字体大小:18px; } .side-link-icon { 颜色:白色;字体大小:30px; }
< button class="text" onClick="getLocation()">Location