AEST to IST to SGT to PST
Time Difference
Australian Eastern Standard Time is 4 hours and 30 minutes ahead of India Standard Time and 2 hours ahead of Singapore Time and 17 hours ahead of Pacific Daylight Time
11:30 pm23:30 in AEST is 7:00 pm19:00 in IST and is 9:30 pm21:30 in SGT and is 6:30 am06:30 in PDT
AEST to IST call time
Best time for a conference call or a meeting is between 12:30pm-6pm in AEST which corresponds to 8am-1:30pm in IST
AEST to SGT call time
Best time for a conference call or a meeting is between 10am-6pm in AEST which corresponds to 8am-4pm in SGT
AEST to PST call time
Best time for a conference call or a meeting is between 10pm-12pm in AEST which corresponds to 4am-6am in PST
11:30 pm23:30 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
7:00 pm19:00 India Standard Time (IST). Offset UTC +5:30 hours
9:30 pm21:30 Singapore Time (SGT). Offset UTC +8:00 hours
6:30 am06:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
11:30 pm23:30 AEST / 7:00 pm19:00 IST / 9:30 pm21:30 SGT / 6:30 am06:30 PDT
| AEST | IST | SGT | PDT |
|---|---|---|---|
| 12am (midnight) | 7:30 pm | 10pm | 7am |
| 1am | 8:30 pm | 11pm | 8am |
| 2am | 9:30 pm | 12am (midnight) | 9am |
| 3am | 10:30 pm | 1am | 10am |
| 4am | 11:30 pm | 2am | 11am |
| 5am | 12:30 am | 3am | 12pm (noon) |
| 6am | 1:30 am | 4am | 1pm |
| 7am | 2:30 am | 5am | 2pm |
| 8am | 3:30 am | 6am | 3pm |
| 9am | 4:30 am | 7am | 4pm |
| 10am | 5:30 am | 8am | 5pm |
| 11am | 6:30 am | 9am | 6pm |
| 12pm (noon) | 7:30 am | 10am | 7pm |
| 1pm | 8:30 am | 11am | 8pm |
| 2pm | 9:30 am | 12pm (noon) | 9pm |
| 3pm | 10:30 am | 1pm | 10pm |
| 4pm | 11:30 am | 2pm | 11pm |
| 5pm | 12:30 pm | 3pm | 12am (midnight) |
| 6pm | 1:30 pm | 4pm | 1am |
| 7pm | 2:30 pm | 5pm | 2am |
| 8pm | 3:30 pm | 6pm | 3am |
| 9pm | 4:30 pm | 7pm | 4am |
| 10pm | 5:30 pm | 8pm | 5am |
| 11pm | 6:30 pm | 9pm | 6am |
| 0:00 | 19:30 | 22:00 | 7:00 |
| 1:00 | 20:30 | 23:00 | 8:00 |
| 2:00 | 21:30 | 0:00 | 9:00 |
| 3:00 | 22:30 | 1:00 | 10:00 |
| 4:00 | 23:30 | 2:00 | 11:00 |
| 5:00 | 0:30 | 3:00 | 12:00 |
| 6:00 | 1:30 | 4:00 | 13:00 |
| 7:00 | 2:30 | 5:00 | 14:00 |
| 8:00 | 3:30 | 6:00 | 15:00 |
| 9:00 | 4:30 | 7:00 | 16:00 |
| 10:00 | 5:30 | 8:00 | 17:00 |
| 11:00 | 6:30 | 9:00 | 18:00 |
| 12:00 | 7:30 | 10:00 | 19:00 |
| 13:00 | 8:30 | 11:00 | 20:00 |
| 14:00 | 9:30 | 12:00 | 21:00 |
| 15:00 | 10:30 | 13:00 | 22:00 |
| 16:00 | 11:30 | 14:00 | 23:00 |
| 17:00 | 12:30 | 15:00 | 0:00 |
| 18:00 | 13:30 | 16:00 | 1:00 |
| 19:00 | 14:30 | 17:00 | 2:00 |
| 20:00 | 15:30 | 18:00 | 3:00 |
| 21:00 | 16:30 | 19:00 | 4:00 |
| 22:00 | 17:30 | 20:00 | 5:00 |
| 23:00 | 18:30 | 21:00 | 6:00 |
Australian Eastern Standard Time
Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia
Countries: It is used in following countries: Australia
Principal Cities: The largest city in the AEST timezone is Sydney from Australia with population about 4.627 million people. Other major cities in the area are Melbourne, Brisbane, Gold Coast, Canberra
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 Australian Eastern Daylight Time (AEDT).
Start: Australian Eastern Standard Time (AEST) started on Sunday, April 6, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, April 6, 2025, 2:00 am. Standard time starts annually the on first Sunday of April.
End: Australian Eastern Standard Time (AEST) ends on Sunday, October 5, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, October 5, 2025, 3:00 am local daylight time instead. Standard time starts annually the on first Sunday of October.
Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra
Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.
AEST representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates ten hour and zero minutes time differences to the east of the zero meridian.
- Kilo - Military abbreviation for AEST
- K - short form of 'Kilo'
- Antarctica/Macquarie
- Australia/ACT
- Australia/Brisbane
- Australia/Canberra
- Australia/Currie
- Australia/Hobart
- Australia/Lindeman
- Australia/Melbourne
- Australia/NSW
- Australia/Queensland
- Australia/Sydney
- Australia/Tasmania
- Australia/Victoria
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap 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
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
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America
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
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on 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 eight hour and zero minutes time differences 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
- Peru Standard Time - UTC -5
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone