WSST to CHAST Converter
Chatham Island is on daylight saving time: CHADT (UTC+13:45) until Sun, Apr 4, 2027.
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
1:00 am01:00 WSST (UTC+13), Nov 2, 2026 = 1:45 am01:45 CHADT (UTC+13:45), Nov 2, 2026
WSST is 45 minutes behind CHADT.
WSST and CHAST examples
These examples always use WSST (UTC+13) and CHAST (UTC+12:45). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
WSST is 15 minutes ahead of CHAST.
How the time difference changes
Depending on seasonal clock changes, WSST is 15 minutes ahead of CHAST or WSST is 45 minutes behind CHADT.
Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in WSST correspond to 8:45 am to 5:45 pm in CHAST or working hours of 9:00 am to 6:00 pm in WSST correspond to 9:45 am to 6:45 pm in CHADT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in WSST correspond to 08:45 to 17:45 in CHAST or working hours of 09:00 to 18:00 in WSST correspond to 09:45 to 18:45 in CHADT.
Compare WSST time with CHAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
West Samoa Standard Time is 45 minutes behind Chatham Island Daylight Time.
1:00 am01:00 in WSST is 1:45 am01:45 in CHADT
WSST to CHADT call time
Best time for a conference call or a meeting is between 9am-5:15pm09:00-17:15 in WSST which corresponds to 9:45am-6pm09:45-18:00 in CHADT
1:00 am01:00 West Samoa Standard Time (WSST). Offset UTC +13:00 hours
1:45 am01:45 Chatham Island Daylight Time (CHADT). Offset UTC +13:45 hours
1:00 am01:00 WSST / 1:45 am01:45 CHADT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| WSST | CHADT |
|---|---|
| 12:45am | |
| 1:45am | |
| 2:45am | |
| 3:45am | |
| 4:45am | |
| 5:45am | |
| 6:45am | |
| 7:45am | |
| 8:45am | |
| 9:45am | |
| 10:45am | |
| 11:45am | |
| 12:45pm | |
| 1:45pm | |
| 2:45pm | |
| 3:45pm | |
| 4:45pm | |
| 5:45pm | |
| 6:45pm | |
| 7:45pm | |
| 8:45pm | |
| 9:45pm | |
| 10:45pm | |
| 11:45pm | |
| 00:45 | |
| 01:45 | |
| 02:45 | |
| 03:45 | |
| 04:45 | |
| 05:45 | |
| 06:45 | |
| 07:45 | |
| 08:45 | |
| 09:45 | |
| 10:45 | |
| 11:45 | |
| 12:45 | |
| 13:45 | |
| 14:45 | |
| 15:45 | |
| 16:45 | |
| 17:45 | |
| 18:45 | |
| 19:45 | |
| 20:45 | |
| 21:45 | |
| 22:45 | |
| 23:45 |
West Samoa Standard Time
Offset: WSST is 13 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Samoa
Principal Cities: The largest city in the WSST time zone is Apia in Samoa, with about 40,407 people. Other major cities in this time zone include Palauli, Asau, Mulifanua, Sale’imoa.
Daylight Saving: Clocks in West Samoa Standard Time (WSST) do not change for daylight saving time, so WSST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
WSST representations, usage and related time zones
- +13 - basic short
- +1300 - basic
- +13:00 - extended
- +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates an offset of thirteen hours to the east of the zero meridian.
- FJST - Fiji Summer Time
- NZDT - New Zealand Daylight Time
- PHOT - Phoenix Island Time
- TKT - Tokelau Time
- TOT - Tonga Time
- WST - West Samoa Time
- WSST - West Samoa Standard Time
Chatham Island Standard Time
Offset: CHAST is 12 hours and 45 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: New Zealand
Principal Cities: The largest city in the CHAST time zone is Waitangi in New Zealand, with about 140 people.
Today the shaded areas are on UTC+13:45.
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Chatham Island Daylight Time (CHADT).
End: Chatham Island Standard Time (CHAST) ended on Sunday, September 27, 2026 at 2:45 am02:45 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:45 am03:45 local daylight time instead. Standard time ends annually on the last Sunday of September.
Start: Chatham Island Standard Time (CHAST) starts on Sunday, April 4, 2027 at 3:45 am03:45 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:45 am02:45. Standard time starts annually on the first Sunday of April.
See New Zealand daylight saving time and upcoming clock changes worldwide.
CHAST representations, usage and related time zones
- +1245 - basic
- +12:45 - extended
- +1245 - sign character (+) followed by a four digit time providing hours (12) and minutes (45) of the offset. Indicates an offset of twelve hours and forty-five minutes to the east of the zero meridian.