Our timezone app turns your location and timestamp into timezone and local time. Thus, if you need local time in your application, just ask GraphHopper timezone. It is microservice you can run wherever you like.
request: http://localhost:8080/timezone?timestamp=1488363179&location=40.713956,-75.767577
response:
{
"timezone": "America/New_York",
"timezone_name": "Eastern Standard Time",
"local_time": {
"offset": -18000,
"year": 2017,
"month": "March",
"day_of_month": 2,
"day_of_week": "Thursday",
"month_value": 3,
"hour": 16,
"minute": 19,
"second": 52,
"nano": 0
}
}
request: http://localhost:8080/timezone?timestamp=1488489592&location=48.873748,2.344482&language=fr
response:
{
"timezone": "Europe/Paris",
"timezone_name": "Heure d'Europe centrale",
"local_time": {
"offset": 3600,
"year": 2017,
"month": "mars",
"day_of_month": 2,
"day_of_week": "jeudi",
"month_value": 3,
"hour": 22,
"minute": 19,
"second": 52,
"nano": 0
}
}
request: http://localhost:8080/timezone?timestamp=1488489592&location=36.031332,138.796876&language=ja
response:
{
"timezone": "Asia/Tokyo",
"timezone_name": "日本標準時",
"local_time": {
"offset": 32400,
"year": 2017,
"month": "3月",
"day_of_month": 3,
"day_of_week": "金曜日",
"month_value": 3,
"hour": 6,
"minute": 19,
"second": 52,
"nano": 0
}
}
try your own example:
- get current unix timestamp from here: http://www.unixtimestamp.com/
- and coordinates from here: https://graphhopper.com/maps/ (just right click wherever you like to specify start and you will be provided with the coordinates in the start field. just copy and paste it as it is)
clone: git clone https://github.com/graphhopper/timezone.git
build: cd timezone/ && mvn package
run: java -jar ./target/timezone-1.0-SNAPSHOT.jar server ./app.yml
use:
- browser:
http://localhost:8080/timezone?timestamp=1488363179&location=40.713956,-75.767577 - curl:
curl "http://localhost:8080/timezone?timestamp=1488363179&location=40.713956,-75.767577"
note: requires java 8
You need to specify two parameters, (Unix) timestamp and location (lat,lon), and you will be provided with the according timezone, local time and offset to UTC. Local time and offset consider daylight saving time (dst).
Input:
| Parameter | Description |
|---|---|
| timestamp | Unix timestamp (in seconds) |
| location | latitude, longitude |
| language | optional, default is 'en' - see the supported languages here |
Output:
| Name | Description |
|---|---|
| timezone | time zone id as defined here: http://efele.net/maps/tz/world/ |
| timezone_name | full name of time zone |
| local_time | local time information considering daylight saving time |
local_time:
| Name | Description |
|---|---|
| offset | offset to UTC in seconds |
| year | - |
| month | - |
| day_of_month | - |
| day_of_week | - |
| month_value | - |
| hour | - |
| minute | - |
| second | - |
| nano | - |
Make sure that you have updated your java environment with the latest tz data, otherwise old DST data might yield wrong local times. For example, such events "Russia Returns to Standard Time All Year" cause wrong local time calculations if you have not updated your JRE/JDK. You can update it as described here:
http://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html