PT to SGT to BST to IST
Time Difference
Pacific Daylight Time is 15 hours behind Singapore Time and 8 hours behind British Summer Time and 12 hours and 30 minutes behind India Standard Time
5:00 pm17:00 in PDT is 8:00 am08:00 in SGT and is 1:00 am01:00 in BST and is 5:30 am05:30 in IST
PT to SGT call time
Best time for a conference call or a meeting is between 5am-7am in PT which corresponds to 9pm-11pm in SGT
PT to BST call time
Best time for a conference call or a meeting is between 8am-10am in PT which corresponds to 5pm-7pm in BST
PT to IST call time
Best time for a conference call or a meeting is between 6am-8am in PT which corresponds to 7:30pm-9:30pm in IST
5:00 pm17:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
8:00 am08:00 Singapore Time (SGT). Offset UTC +8:00 hours
1:00 am01:00 British Summer Time (BST). Offset UTC +1:00 hour
5:30 am05:30 India Standard Time (IST). Offset UTC +5:30 hours
5:00 pm17:00 PDT / 8:00 am08:00 SGT / 1:00 am01:00 BST / 5:30 am05:30 IST
PT | SGT | BST | IST |
---|---|---|---|
12am (midnight) | 3pm | 8am | 12:30 pm |
1am | 4pm | 9am | 1:30 pm |
2am | 5pm | 10am | 2:30 pm |
3am | 6pm | 11am | 3:30 pm |
4am | 7pm | 12pm (noon) | 4:30 pm |
5am | 8pm | 1pm | 5:30 pm |
6am | 9pm | 2pm | 6:30 pm |
7am | 10pm | 3pm | 7:30 pm |
8am | 11pm | 4pm | 8:30 pm |
9am | 12am (midnight) | 5pm | 9:30 pm |
10am | 1am | 6pm | 10:30 pm |
11am | 2am | 7pm | 11:30 pm |
12pm (noon) | 3am | 8pm | 12:30 am |
1pm | 4am | 9pm | 1:30 am |
2pm | 5am | 10pm | 2:30 am |
3pm | 6am | 11pm | 3:30 am |
4pm | 7am | 12am (midnight) | 4:30 am |
5pm | 8am | 1am | 5:30 am |
6pm | 9am | 2am | 6:30 am |
7pm | 10am | 3am | 7:30 am |
8pm | 11am | 4am | 8:30 am |
9pm | 12pm (noon) | 5am | 9:30 am |
10pm | 1pm | 6am | 10:30 am |
11pm | 2pm | 7am | 11:30 am |
0:00 | 15:00 | 8:00 | 12:30 |
1:00 | 16:00 | 9:00 | 13:30 |
2:00 | 17:00 | 10:00 | 14:30 |
3:00 | 18:00 | 11:00 | 15:30 |
4:00 | 19:00 | 12:00 | 16:30 |
5:00 | 20:00 | 13:00 | 17:30 |
6:00 | 21:00 | 14:00 | 18:30 |
7:00 | 22:00 | 15:00 | 19:30 |
8:00 | 23:00 | 16:00 | 20:30 |
9:00 | 0:00 | 17:00 | 21:30 |
10:00 | 1:00 | 18:00 | 22:30 |
11:00 | 2:00 | 19:00 | 23:30 |
12:00 | 3:00 | 20:00 | 0:30 |
13:00 | 4:00 | 21:00 | 1:30 |
14:00 | 5:00 | 22:00 | 2:30 |
15:00 | 6:00 | 23:00 | 3:30 |
16:00 | 7:00 | 0:00 | 4:30 |
17:00 | 8:00 | 1:00 | 5:30 |
18:00 | 9:00 | 2:00 | 6:30 |
19:00 | 10:00 | 3:00 | 7:30 |
20:00 | 11:00 | 4:00 | 8:30 |
21:00 | 12:00 | 5:00 | 9:30 |
22:00 | 13:00 | 6:00 | 10:30 |
23:00 | 14:00 | 7:00 | 11:30 |
Pacific Time
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
PT 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 eight hour and zero minutes time differences to the west of the zero meridian.
- Uniform - Military abbreviation for PT
- U - short form of 'Uniform'
- Pacific Time - UTC -8
- Ponape Time - UTC +11
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
Singapore Time
Offset: SGT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

SGT 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 eight hour and zero minutes time differences to the east of the zero meridian.
- Hotel - Military abbreviation for SGT
- H - short form of 'Hotel'
- Singapore Time - UTC +8
- South Georgia Time - UTC -2
- ACT - ASEAN Common Time
- AWST - Australian Western Standard Time
- BNT - Brunei Darussalam Time
- CAST - Casey Time
- CHOT - Choibalsan Time
- CST - China Standard Time
- H - Hotel Time Zone
- HKT - Hong Kong Time
- HOVST - Hovd Summer Time
- IRKT - Irkutsk Time
- KRAST - Krasnoyarsk Summer Time
- MYT - Malaysia Time
- PHT - Philippine Time
- SGT - Singapore Time
- ULAT - Ulaanbaatar Time
- WITA - Central Indonesian Time
British Summer Time
Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Birmingham, Glasgow, Liverpool, Saint Helier

Daylight Saving: British Summer Time (BST) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Greenwich Mean Time (GMT).
Start: British Summer Time (BST) started on Sunday, March 30, 2025 at 1:00 am local time and clocks were set one hour forward to Sunday, March 30, 2025, 2:00 am. Daylight saving starts annually the on last Sunday of March
End: British Summer Time (BST) ends on Sunday, October 26, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, October 26, 2025, 1:00 am local standard time instead. Daylight saving ends annually the on last Sunday of October
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- Brasilia Standard Time - UTC -3
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same

IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30