Time in GMT and CHAST
The time difference between Greenwich Mean Time (GMT) and Chatham Standard Time (CHAST) is 12 hours 45 minutes. Chatham Standard Time is 12 hours 45 minutes ahead of Greenwich Mean Time.
This means 9am GMT is 9:45pm CHAST and 5pm GMT is 5:45am CHAST (next day).
Greenwich Mean Time
- The current local time in GMT is 11:41 am (July 18, 2026)
- GMT time zone offset is UTC+00:00
Chatham Standard Time
- The current local time in CHAST is 12:26 am (July 19, 2026)
- CHAST time zone offset is UTC+12:45
How to convert Greenwich Mean Time to Chatham Standard Time?
Add 12 hours 45 minutes to Greenwich Mean Time to get Chatham Standard Time.
Time in GMT
00:00
Time in CHAST
00:00
Use the slider above to convert Greenwich Mean 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
| GMT | CHAST |
|---|---|
| 12am | 12:45pm |
| 1am | 1:45pm |
| 2am | 2:45pm |
| 3am | 3:45pm |
| 4am | 4:45pm |
| 5am | 5:45pm |
| 6am | 6:45pm |
| 7am | 7:45pm |
| 8am | 8:45pm |
| 9am | 9:45pm |
| 10am | 10:45pm |
| 11am | 11:45pm |
| 12pm | 0:45am |
| 1pm | 1:45am |
| 2pm | 2:45am |
| 3pm | 3:45am |
| 4pm | 4:45am |
| 5pm | 5:45am |
| 6pm | 6:45am |
| 7pm | 7:45am |
| 8pm | 8:45am |
| 9pm | 9:45am |
| 10pm | 10:45am |
| 11pm | 11:45am |