GST
Gulf Standard Time
GMT +4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AEST
Australian Eastern Standard Time
GMT +10
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

GST is 6 hours behind AEST. GST uses GMT +4, and AEST uses GMT +10 for this comparison.

For example, 11:00 pm GST is 5:00 am AEST. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 9am-11am GST, which is 3pm-5pm AEST.

Compare GST time with AEST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Gulf Standard Time is 6 hours behind Australian Eastern Standard Time
11:00 pm23:00 in GST is 5:00 am05:00 in AEST

GST to AEST call time
Best time for a conference call or a meeting is between 9am-11am in GST which corresponds to 3pm-5pm in AEST

11:00 pm23:00 Gulf Standard Time (GST). Offset UTC +4:00 hours
5:00 am05:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours

11:00 pm23:00 GST / 5:00 am05:00 AEST

GSTAEST
12am (midnight)6am
1am7am
2am8am
3am9am
4am10am
5am11am
6am12pm (noon)
7am1pm
8am2pm
9am3pm
10am4pm
11am5pm
12pm (noon)6pm
1pm7pm
2pm8pm
3pm9pm
4pm10pm
5pm11pm
6pm12am (midnight)
7pm1am
8pm2am
9pm3am
10pm4am
11pm5am
00:0006:00
01:0007:00
02:0008:00
03:0009:00
04:0010:00
05:0011:00
06:0012:00
07:0013:00
08:0014:00
09:0015:00
10:0016:00
11:0017:00
12:0018:00
13:0019:00
14:0020:00
15:0021:00
16:0022:00
17:0023:00
18:0000:00
19:0001:00
20:0002:00
21:0003:00
22:0004:00
23:0005:00

Gulf Standard Time

Offset: GST is 4 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: United Arab Emirates

Principal Cities: The largest city in the GST time zone is Dubai in United Arab Emirates, with about 1.137 million people. Other major cities in this time zone include Abu Dhabi, Sharjah, Al Ain, Ajman.

Daylight Saving: Clocks in Gulf Standard Time (GST) do not change for daylight saving time, so GST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

GST Time Zone Geo Map
GST timezone map

GST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +04 - basic short
  • +0400 - basic
  • +04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Delta - Military abbreviation for GST
  • D - short form of 'Delta'
Time zones with the GMT +4 offset:
  • KUYT - Kuybyshev Time
  • MSD - Moscow Daylight Time
  • SAMT - Samara Time
  • AMT - Armenia Time
  • AZT - Azerbaijan Time
  • D - Delta Time Zone
  • GET - Georgia Standard Time
  • GST - Gulf Standard Time
  • MUT - Mauritius Time
  • RET - Reunion Time
  • SCT - Seychelles Time

Australian Eastern Standard Time

Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia

Countries using this time zone: Australia

Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 4.627 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Canberra.

AEST Time Zone Geo Map
AEST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time 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 5, 2026 at 3:00 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am. Standard time starts annually on the 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 4, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, October 4, 2026, 3:00 am local daylight time instead. Standard time ends annually on the 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 an offset of ten hours 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