CHAST to M Converter
Quick answers
CHAST is 45 minutes ahead of M. CHAST uses GMT +12:45, and M uses GMT +12 for this comparison.
For example, 2:00 pm CHAST is 1:15 pm M. Use the converter above to adjust the date or time and create a shareable meeting link.
Best meeting overlap: 9:45am-5pm CHAST, which is 9am-4:15pm M.
Compare CHAST time with M time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Chatham Island Standard Time is 0 hours and 45 minutes ahead of Mike Time Zone
2:00 pm14:00 in CHAST is 1:15 pm13:15 in M
CHAST to M 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 M
2:00 pm14:00 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours
1:15 pm13:15 Mike Time Zone (M). Offset UTC +12:00 hours
2:00 pm14:00 CHAST / 1:15 pm13:15 M
| CHAST | M |
|---|---|
| 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 Standard Time
Offset: CHAST is 12 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific
Countries using this time zone: New Zealand

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).
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 on the 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 ends annually on the last Sunday of September.
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.
Mike Time Zone
Offset: M is 12 hours ahead Greenwich Mean Time (GMT) and is used in Military
Daylight Saving: Clocks in Mike Time Zone (M) do not change for daylight saving time, so M stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
M representations, usage and related time zones
- +12 - basic short
- +1200 - basic
- +12:00 - extended
- +1200 - sign character (+) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates an offset of twelve hours to the east of the zero meridian.
- Mike - Military abbreviation for M
- M - short form of 'Mike'
- 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
