CHADT to WSDT Converter
WSDT is not used on this date
This converter uses WST (GMT +13), the offset Apia uses on this date. Open the WST converter.Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
CHADT and WSDT examples
These examples always use CHADT (UTC+13:45) and WSDT (UTC+14). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
CHADT is 15 minutes behind WSDT.
How the time difference changes
CHADT is 45 minutes ahead of WST year-round.
Working hours of 9:00 am to 5:00 pm in CHADT correspond to 8:15 am to 4:15 pm in WST.
Compare CHADT time with WSDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Chatham Island Daylight Time is 0 hours and 45 minutes ahead of West Samoa Time
4:00 am04:00 in CHADT is 3:15 am03:15 in WST
CHADT to WST call time
Best time for a conference call or a meeting is between 9:45am-5pm in CHADT which corresponds to 9am-4:15pm in WST
4:00 am04:00 Chatham Island Daylight Time (CHADT). Offset UTC +13:45 hours
3:15 am03:15 West Samoa Time (WST). Offset UTC +13:00 hours
4:00 am04:00 CHADT / 3:15 am03:15 WST
| CHADT | WST |
|---|---|
| 12am (midnight) | 11:15 pm |
| 1am | 12:15 am |
| 2am | 1:15 am |
| 3am | 2:15 am |
| 4am | 3:15 am |
| 5am | 4:15 am |
| 6am | 5:15 am |
| 7am | 6:15 am |
| 8am | 7:15 am |
| 9am | 8:15 am |
| 10am | 9:15 am |
| 11am | 10:15 am |
| 12pm (noon) | 11:15 am |
| 1pm | 12:15 pm |
| 2pm | 1:15 pm |
| 3pm | 2:15 pm |
| 4pm | 3:15 pm |
| 5pm | 4:15 pm |
| 6pm | 5:15 pm |
| 7pm | 6:15 pm |
| 8pm | 7:15 pm |
| 9pm | 8:15 pm |
| 10pm | 9:15 pm |
| 11pm | 10:15 pm |
| 00:00 | 23:15 |
| 01:00 | 00:15 |
| 02:00 | 01:15 |
| 03:00 | 02:15 |
| 04:00 | 03:15 |
| 05:00 | 04:15 |
| 06:00 | 05:15 |
| 07:00 | 06:15 |
| 08:00 | 07:15 |
| 09:00 | 08:15 |
| 10:00 | 09:15 |
| 11:00 | 10:15 |
| 12:00 | 11:15 |
| 13:00 | 12:15 |
| 14:00 | 13:15 |
| 15:00 | 14:15 |
| 16:00 | 15:15 |
| 17:00 | 16:15 |
| 18:00 | 17:15 |
| 19:00 | 18:15 |
| 20:00 | 19:15 |
| 21:00 | 20:15 |
| 22:00 | 21:15 |
| 23:00 | 22:15 |
Chatham Island Daylight Time
Offset: CHADT is 13 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific
Countries using this time zone: New Zealand

Daylight Saving: Chatham Island Daylight Time (CHADT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Chatham Island Standard Time (CHAST).
Start: Chatham Island Daylight Time (CHADT) started on Sunday, September 27, 2026 at 2:45 am local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:45 am. Daylight saving starts annually on the last Sunday of September
End: Chatham Island Daylight Time (CHADT) ends on Sunday, April 4, 2027 at 3:45 am local time and clocks are set one hour back to Sunday, April 4, 2027, 2:45 am local standard time instead. Daylight saving ends annually on the first Sunday of April
CHADT representations, usage and related time zones
- +1345 - basic
- +13:45 - extended
- +1345 - sign character (+) followed by a four digit time providing hours (13) and minutes (45) of the offset. Indicates an offset of thirteen hours and forty-five minutes to the east of the zero meridian.
West Samoa Daylight Time
Offset: WSDT is 14 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

WSDT representations, usage and related time zones
- +14 - basic short
- +1400 - basic
- +14:00 - extended
- +1400 - sign character (+) followed by a four digit time providing hours (14) and minutes (00) of the offset. Indicates an offset of fourteen hours to the east of the zero meridian.
- LINT - Line Islands Time
- WSDT - West Samoa Daylight Time
