CHAST
Chatham Island Standard Time
GMT +12:45
TST
Tonga Standard Time
GMT +13

Time Difference

Chatham Island Standard Time is 0 hours and 15 minutes behind Tonga Standard Time
12:30 am00:30 in CHAST is 12:45 am00:45 in TST

CHAST to TST call time
Best time for a conference call or a meeting is between 8am-5:45pm in CHAST which corresponds to 8:15am-6pm in TST

12:30 am00:30 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours
12:45 am00:45 Tonga Standard Time (TST). Offset UTC +13:00 hours

12:30 am00:30 CHAST / 12:45 am00:45 TST

CHAST TST
12am (midnight) 12:15 am
1am 1:15 am
2am 2:15 am
3am 3:15 am
4am 4:15 am
5am 5:15 am
6am 6:15 am
7am 7:15 am
8am 8:15 am
9am 9:15 am
10am 10:15 am
11am 11:15 am
12pm (noon) 12:15 pm
1pm 1:15 pm
2pm 2:15 pm
3pm 3:15 pm
4pm 4:15 pm
5pm 5:15 pm
6pm 6:15 pm
7pm 7:15 pm
8pm 8:15 pm
9pm 9:15 pm
10pm 10:15 pm
11pm 11:15 pm
0:00 0:15
1:00 1:15
2:00 2:15
3:00 3:15
4:00 4:15
5:00 5:15
6:00 6:15
7:00 7:15
8:00 8:15
9:00 9:15
10:00 10:15
11:00 11:15
12:00 12:15
13:00 13:15
14:00 14:15
15:00 15:15
16:00 16:15
17:00 17:15
18:00 18:15
19:00 19:15
20:00 20:15
21:00 21:15
22:00 22:15
23:00 23:15

Chatham Island Standard Time

Offset: CHAST is 12 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific

CHAST Time Zone Geo Map
CHAST timezone map

CHAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1245 - basic
  • +12:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1245 - sign character (+) followed by a four digit time providing hours (12) and minutes (45) of the offset. Indicates twelve hour and forty-five minutes time differences to the east of the zero meridian.

Tonga Standard Time

Offset: TST is 13 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

TST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates thirteen hour and zero minutes time differences to the east of the zero meridian.
TST Abbreviation: Several time zones share TST abbreviation and it could refer to these time zones
  • Turkmenistan Standard Time - UTC +5
  • Tonga Standard Time - UTC +13
Time zones with the GMT +13 offset:
  • 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