CHAST
Chatham Island Standard Time
GMT +12:45
MHT
Marshall Islands Time
GMT +12

Time Difference

Chatham Island Standard Time is 0 hours and 45 minutes ahead of Marshall Islands Time
11:30 am11:30 in CHAST is 10:45 am10:45 in MHT

CHAST to MHT call time
Best time for a conference call or a meeting is between 9:45am-5pm in CHAST which corresponds to 9am-4:15pm in MHT

11:30 am11:30 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours
10:45 am10:45 Marshall Islands Time (MHT). Offset UTC +12:00 hours

11:30 am11:30 CHAST / 10:45 am10:45 MHT

CHAST MHT
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
0:00 23:15
1:00 0:15
2:00 1:15
3:00 2:15
4:00 3:15
5:00 4:15
6:00 5:15
7:00 6:15
8:00 7:15
9:00 8:15
10:00 9:15
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 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

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Chatham Island Daylight Time (CHADT).

Start: Chatham Island Standard Time (CHAST) started on Sunday, April 5, 2026 at 3:45 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:45 am. Standard time starts annually the on first Sunday of April.

End: Chatham Island Standard Time (CHAST) ends on Sunday, September 27, 2026 at 2:45 am local time and clocks are set one hour forward to Sunday, September 27, 2026, 3:45 am local daylight time instead. Standard time starts annually the on last Sunday of September.

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.

Marshall Islands Time

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

Daylight Saving: Marshall Islands Time (MHT) is not adjusted for daylight saving therefore MHT remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Marshall Islands Time remains the same

MHT Time Zone Geo Map
MHT timezone map

MHT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +12 - basic short
  • +1200 - basic
  • +12:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1200 - sign character (+) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates twelve hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Mike - Military abbreviation for MHT
  • M - short form of 'Mike'
Time zones with the GMT +12 offset:
  • ANAST - Anadyr Summer Time
  • ANAT - Anadyr Time
  • FJT - Fiji Time
  • GILT - Gilbert Island Time
  • M - Mike Time Zone
  • MAGST - Magadan Summer Time
  • MHT - Marshall Islands Time
  • NRT - Nauru Time
  • NZST - New Zealand Standard Time
  • PETST - Kamchatka Summer Time
  • TVT - Tuvalu Time
  • WFT - Wallis and Futuna Time