Time in JST and CHAST
The time difference between Japan Standard Time (JST) and Chatham Standard Time (CHAST) is 3 hours 45 minutes. Chatham Standard Time is 3 hours 45 minutes ahead of Japan Standard Time.
This means 9am JST is 12:45pm CHAST and 5pm JST is 8:45pm CHAST.
Japan Standard Time
- The current local time in JST is 4:07 am (July 9, 2026)
- JST time zone offset is UTC+09:00
Chatham Standard Time
- The current local time in CHAST is 7:52 am (July 9, 2026)
- CHAST time zone offset is UTC+12:45
How to convert Japan Standard Time to Chatham Standard Time?
Add 3 hours 45 minutes to Japan Standard Time to get Chatham Standard Time.
Time in JST
00:00
Time in CHAST
00:00
Use the slider above to convert Japan Standard Time to Chatham Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| JST | CHAST |
|---|---|
| 12am | 3:45am |
| 1am | 4:45am |
| 2am | 5:45am |
| 3am | 6:45am |
| 4am | 7:45am |
| 5am | 8:45am |
| 6am | 9:45am |
| 7am | 10:45am |
| 8am | 11:45am |
| 9am | 12:45pm |
| 10am | 1:45pm |
| 11am | 2:45pm |
| 12pm | 3:45pm |
| 1pm | 4:45pm |
| 2pm | 5:45pm |
| 3pm | 6:45pm |
| 4pm | 7:45pm |
| 5pm | 8:45pm |
| 6pm | 9:45pm |
| 7pm | 10:45pm |
| 8pm | 11:45pm |
| 9pm | 0:45am |
| 10pm | 1:45am |
| 11pm | 2:45am |