PDT to CHAST Converter
Quick answers
PDT is 19 hours and 45 minutes behind CHAST. PDT uses GMT -7, and CHAST uses GMT +12:45 for this comparison.
For example, 8:30 am PDT is 4:15 am CHAST. Use the converter above to adjust the date or time and create a shareable meeting link.
Best meeting overlap: 1:15pm-5pm PDT, which is 9am-12:45pm CHAST (next day).
Compare PDT time with CHAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Pacific Daylight Time is 19 hours and 45 minutes behind Chatham Island Standard Time
8:30 am08:30 in PDT is 4:15 am04:15 in CHAST
PDT to CHAST call time
Best time for a conference call or a meeting is between 1:15pm-5pm in PDT which corresponds to 9am-12:45pm in CHAST (next day)
8:30 am08:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:15 am04:15 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours
8:30 am08:30 PDT / 4:15 am04:15 CHAST
| PDT | CHAST |
|---|---|
| 12am (midnight) | 7:45 pm |
| 1am | 8:45 pm |
| 2am | 9:45 pm |
| 3am | 10:45 pm |
| 4am | 11:45 pm |
| 5am | 12:45 am |
| 6am | 1:45 am |
| 7am | 2:45 am |
| 8am | 3:45 am |
| 9am | 4:45 am |
| 10am | 5:45 am |
| 11am | 6:45 am |
| 12pm (noon) | 7:45 am |
| 1pm | 8:45 am |
| 2pm | 9:45 am |
| 3pm | 10:45 am |
| 4pm | 11:45 am |
| 5pm | 12:45 pm |
| 6pm | 1:45 pm |
| 7pm | 2:45 pm |
| 8pm | 3:45 pm |
| 9pm | 4:45 pm |
| 10pm | 5:45 pm |
| 11pm | 6:45 pm |
| 00:00 | 19:45 |
| 01:00 | 20:45 |
| 02:00 | 21:45 |
| 03:00 | 22:45 |
| 04:00 | 23:45 |
| 05:00 | 00:45 |
| 06:00 | 01:45 |
| 07:00 | 02:45 |
| 08:00 | 03:45 |
| 09:00 | 04:45 |
| 10:00 | 05:45 |
| 11:00 | 06:45 |
| 12:00 | 07:45 |
| 13:00 | 08:45 |
| 14:00 | 09:45 |
| 15:00 | 10:45 |
| 16:00 | 11:45 |
| 17:00 | 12:45 |
| 18:00 | 13:45 |
| 19:00 | 14:45 |
| 20:00 | 15:45 |
| 21:00 | 16:45 |
| 22:00 | 17:45 |
| 23:00 | 18:45 |
Pacific Daylight Time
Offset: PDT is 7 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, San Jose.
French: HAP - Heure Avancée du Pacifique
Spanish: PT - Zona Noroeste

Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Pacific Standard Time (PST).
Start: Pacific Daylight Time (PDT) started on Sunday, March 8, 2026 at 2:00 am local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am. Daylight saving starts annually on the second Sunday of March
End: Pacific Daylight Time (PDT) ends on Sunday, November 1, 2026 at 2:00 am local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November
PDT representations, usage and related time zones
- -07 - basic short
- -0700 - basic
- -07:00 - extended
- -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
- Tango - Military abbreviation for PDT
- T - short form of 'Tango'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone
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.
