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CHADT
Chatham Island Daylight Time
GMT +13:45
12am
3am
6am
9am
12pm
3pm
6pm
9pm
WST/WSDT
West Samoa Time
GMT +13
12am
3am
6am
9am
12pm
3pm
6pm
9pm
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

CHADTWST
12am (midnight)11:15 pm
1am12:15 am
2am1:15 am
3am2:15 am
4am3:15 am
5am4:15 am
6am5:15 am
7am6:15 am
8am7:15 am
9am8:15 am
10am9:15 am
11am10:15 am
12pm (noon)11:15 am
1pm12:15 pm
2pm1:15 pm
3pm2:15 pm
4pm3:15 pm
5pm4:15 pm
6pm5:15 pm
7pm6:15 pm
8pm7:15 pm
9pm8:15 pm
10pm9:15 pm
11pm10:15 pm
00:0023:15
01:0000:15
02:0001:15
03:0002:15
04:0003:15
05:0004:15
06:0005:15
07:0006:15
08:0007:15
09:0008:15
10:0009:15
11:0010:15
12:0011:15
13:0012:15
14:0013:15
15:0014:15
16:0015:15
17:0016:15
18:0017:15
19:0018:15
20:0019:15
21:0020:15
22:0021:15
23:0022:15

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

CHADT Time Zone Geo Map
CHADT timezone map

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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1345 - basic
  • +13:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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 Time Zone Geo Map
WSDT timezone map

WSDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +14 - basic short
  • +1400 - basic
  • +14:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Time zones with the GMT +14 offset:
  • LINT - Line Islands Time
  • WSDT - West Samoa Daylight Time