PST to GMT to Boston Time Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.
Iceland and Ghana stay on GMT (UTC+0).
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5:00 am05:00 PDT (UTC-7), Oct 15, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 15, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 15, 2026
PDT is 7 hours behind GMT. PDT is 3 hours behind Boston.
How the time difference changes
PST to GMT
For most of the year, PDT is 7 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, PST is 8 hours behind GMT.
For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 4:00 pm to 1:00 am (next day) in GMT. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 5:00 pm to 2:00 am (next day) in GMT.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 16:00 to 01:00 (next day) in GMT. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 17:00 to 02:00 (next day) in GMT.
PST to Boston
For most of the year, PDT is 3 hours behind Boston. From Nov 1, 2026 to Mar 14, 2027, PST is 3 hours behind Boston. Briefly around clock changes, PDT is 2 hours behind Boston or PST is 4 hours behind Boston.
For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 12:00 pm to 9:00 pm in Boston. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 12:00 pm to 9:00 pm in Boston.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 12:00 to 21:00 in Boston. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 12:00 to 21:00 in Boston.
Compare PST time with GMT and Boston time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Pacific Daylight Time is 7 hours behind Greenwich Mean Time. Pacific Daylight Time is 3 hours behind EDT (Eastern Daylight Time).
5:00 am05:00 in PDT is 12:00 pm12:00 in GMT and is 8:00 am08:00 in Boston, MA, USA
PDT to GMT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in PDT which corresponds to 4pm-6pm16:00-18:00 in GMT
PDT to Boston call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in PDT which corresponds to 12pm-6pm12:00-18:00 in Boston
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
8:00 am08:00 EDT (Eastern Daylight Time) (Boston, MA, USA). Offset UTC -4:00 hours
5:00 am05:00 PDT / 12:00 pm12:00 GMT / 8:00 am08:00 Boston, MA, USA
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| PDT | GMT | Boston, MA, USA |
|---|---|---|
| 7:00am | 3:00am | |
| 8:00am | 4:00am | |
| 9:00am | 5:00am | |
| 10:00am | 6:00am | |
| 11:00am | 7:00am | |
| 12:00pm | 8:00am | |
| 1:00pm | 9:00am | |
| 2:00pm | 10:00am | |
| 3:00pm | 11:00am | |
| 4:00pm | 12:00pm | |
| 5:00pm | 1:00pm | |
| 6:00pm | 2:00pm | |
| 7:00pm | 3:00pm | |
| 8:00pm | 4:00pm | |
| 9:00pm | 5:00pm | |
| 10:00pm | 6:00pm | |
| 11:00pm | 7:00pm | |
| 12:00am next day | 8:00pm | |
| 1:00am next day | 9:00pm | |
| 2:00am next day | 10:00pm | |
| 3:00am next day | 11:00pm | |
| 4:00am next day | 12:00am next day | |
| 5:00am next day | 1:00am next day | |
| 6:00am next day | 2:00am next day | |
| 07:00 | 03:00 | |
| 08:00 | 04:00 | |
| 09:00 | 05:00 | |
| 10:00 | 06:00 | |
| 11:00 | 07:00 | |
| 12:00 | 08:00 | |
| 13:00 | 09:00 | |
| 14:00 | 10:00 | |
| 15:00 | 11:00 | |
| 16:00 | 12:00 | |
| 17:00 | 13:00 | |
| 18:00 | 14:00 | |
| 19:00 | 15:00 | |
| 20:00 | 16:00 | |
| 21:00 | 17:00 | |
| 22:00 | 18:00 | |
| 23:00 | 19:00 | |
| 00:00 next day | 20:00 | |
| 01:00 next day | 21:00 | |
| 02:00 next day | 22:00 | |
| 03:00 next day | 23:00 | |
| 04:00 next day | 00:00 next day | |
| 05:00 next day | 01:00 next day | |
| 06:00 next day | 02:00 next day |
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Today the shaded areas are on UTC−7 (PDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
PST representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
Greenwich Mean Time
Offset: GMT is the same as Greenwich Mean Time (GMT).
Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Dakar, Kumasi.
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.
Today the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time).
GMT representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
- Zulu - Military abbreviation for GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Coordinated Universal Time
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
Boston Time Zone and Facts
Time Zone
EST – Eastern Standard Time, UTC-5 (standard time)