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AEST to SGT to IST

AEST
Australian Eastern Standard Time
GMT +10
SGT
Singapore Time
GMT +8
IST
India Standard Time
GMT +5:30

Time Difference

Australian Eastern Standard Time is 2 hours ahead of Singapore Time and 4 hours and 30 minutes ahead of India Standard Time
6:30 pm18:30 in AEST is 4:30 pm16:30 in SGT and is 2:00 pm14:00 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 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

6:30 pm18:30 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
4:30 pm16:30 Singapore Time (SGT). Offset UTC +8:00 hours
2:00 pm14:00 India Standard Time (IST). Offset UTC +5:30 hours

6:30 pm18:30 AEST / 4:30 pm16:30 SGT / 2:00 pm14:00 IST

AEST SGT IST
12am (midnight) 10pm 7:30 pm
1am 11pm 8:30 pm
2am 12am (midnight) 9:30 pm
3am 1am 10:30 pm
4am 2am 11:30 pm
5am 3am 12:30 am
6am 4am 1:30 am
7am 5am 2:30 am
8am 6am 3:30 am
9am 7am 4:30 am
10am 8am 5:30 am
11am 9am 6:30 am
12pm (noon) 10am 7:30 am
1pm 11am 8:30 am
2pm 12pm (noon) 9:30 am
3pm 1pm 10:30 am
4pm 2pm 11:30 am
5pm 3pm 12:30 pm
6pm 4pm 1:30 pm
7pm 5pm 2:30 pm
8pm 6pm 3:30 pm
9pm 7pm 4:30 pm
10pm 8pm 5:30 pm
11pm 9pm 6:30 pm
0:00 22:00 19:30
1:00 23:00 20:30
2:00 0:00 21:30
3:00 1:00 22:30
4:00 2:00 23:30
5:00 3:00 0:30
6:00 4:00 1:30
7:00 5:00 2:30
8:00 6:00 3:30
9:00 7:00 4:30
10:00 8:00 5:30
11:00 9:00 6:30
12:00 10:00 7:30
13:00 11:00 8:30
14:00 12:00 9:30
15:00 13:00 10:30
16:00 14:00 11:30
17:00 15:00 12:30
18:00 16:00 13:30
19:00 17:00 14:30
20:00 18:00 15:30
21:00 19:00 16:30
22:00 20:00 17:30
23:00 21:00 18:30

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

AEST Time Zone Geo Map
AEST timezone map

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).

Daylight saving time clock moves back for one hour from 3am to 2amStart: 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.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: 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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for AEST
  • K - short form of 'Kilo'
IANA/Olson: Reflects AEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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
Time zones with the GMT +10 offset:
  • 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

Singapore Time

Offset: SGT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

SGT Time Zone Geo Map
SGT timezone map

SGT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for SGT
  • H - short form of 'Hotel'
SGT Abbreviation: Several time zones share SGT abbreviation and it could refer to these time zones
  • Singapore Time - UTC +8
  • South Georgia Time - UTC -2
Time zones with the GMT +8 offset:
  • 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

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 Time Zone Geo Map
IST timezone map

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2
EST to IST GMT to EST PST to EST EST to GMT PST to GMT