AEST
Australian Eastern Standard Time
GMT +10
NZST
New Zealand Standard Time
GMT +12
SGT
Singapore Time
GMT +8
JST
Japan Standard Time
GMT +9
WIT
Eastern Indonesian Time
GMT +9
WIT
Eastern Indonesian Time
GMT +9
HKT
Hong Kong Time
GMT +8
MYT
Malaysia Time
GMT +8
IST
India Standard Time
GMT +5:30

Time Difference

Australian Eastern Standard Time is 2 hours behind New Zealand Standard Time and 2 hours ahead of Singapore Time and 1 hour ahead of Japan Standard Time and 1 hour ahead of Eastern Indonesian Time and 1 hour ahead of Eastern Indonesian Time and 2 hours ahead of Hong Kong Time and 2 hours ahead of Malaysia Time and 4 hours and 30 minutes ahead of India Standard Time
3:00 pm15:00 in AEST is 5:00 pm17:00 in NZST and is 1:00 pm13:00 in SGT and is 2:00 pm14:00 in JST and is 2:00 pm14:00 in WIT and is 2:00 pm14:00 in WIT and is 1:00 pm13:00 in HKT and is 1:00 pm13:00 in MYT and is 10:30 am10:30 in IST

AEST to NZST call time
Best time for a conference call or a meeting is between 8am-4pm in AEST which corresponds to 10am-6pm in NZST
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 JST call time
Best time for a conference call or a meeting is between 9am-6pm in AEST which corresponds to 8am-5pm in JST
AEST to WIT call time
Best time for a conference call or a meeting is between 9am-6pm in AEST which corresponds to 8am-5pm in WIT
AEST to WIT call time
Best time for a conference call or a meeting is between 9am-6pm in AEST which corresponds to 8am-5pm in WIT
AEST to HKT call time
Best time for a conference call or a meeting is between 10am-6pm in AEST which corresponds to 8am-4pm in HKT
AEST to MYT call time
Best time for a conference call or a meeting is between 10am-6pm in AEST which corresponds to 8am-4pm in MYT
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

3:00 pm15:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
5:00 pm17:00 New Zealand Standard Time (NZST). Offset UTC +12:00 hours
1:00 pm13:00 Singapore Time (SGT). Offset UTC +8:00 hours
2:00 pm14:00 Japan Standard Time (JST). Offset UTC +9:00 hours
2:00 pm14:00 Eastern Indonesian Time (WIT). Offset UTC +9:00 hours
2:00 pm14:00 Eastern Indonesian Time (WIT). Offset UTC +9:00 hours
1:00 pm13:00 Hong Kong Time (HKT). Offset UTC +8:00 hours
1:00 pm13:00 Malaysia Time (MYT). Offset UTC +8:00 hours
10:30 am10:30 India Standard Time (IST). Offset UTC +5:30 hours

3:00 pm15:00 AEST / 5:00 pm17:00 NZST / 1:00 pm13:00 SGT / 2:00 pm14:00 JST / 2:00 pm14:00 WIT / 2:00 pm14:00 WIT / 1:00 pm13:00 HKT / 1:00 pm13:00 MYT / 10:30 am10:30 IST

AEST NZST SGT JST WIT WIT HKT MYT IST
12am (midnight) 2am 10pm 11pm 11pm 11pm 10pm 10pm 7:30 pm
1am 3am 11pm 12am (midnight) 12am (midnight) 12am (midnight) 11pm 11pm 8:30 pm
2am 4am 12am (midnight) 1am 1am 1am 12am (midnight) 12am (midnight) 9:30 pm
3am 5am 1am 2am 2am 2am 1am 1am 10:30 pm
4am 6am 2am 3am 3am 3am 2am 2am 11:30 pm
5am 7am 3am 4am 4am 4am 3am 3am 12:30 am
6am 8am 4am 5am 5am 5am 4am 4am 1:30 am
7am 9am 5am 6am 6am 6am 5am 5am 2:30 am
8am 10am 6am 7am 7am 7am 6am 6am 3:30 am
9am 11am 7am 8am 8am 8am 7am 7am 4:30 am
10am 12pm (noon) 8am 9am 9am 9am 8am 8am 5:30 am
11am 1pm 9am 10am 10am 10am 9am 9am 6:30 am
12pm (noon) 2pm 10am 11am 11am 11am 10am 10am 7:30 am
1pm 3pm 11am 12pm (noon) 12pm (noon) 12pm (noon) 11am 11am 8:30 am
2pm 4pm 12pm (noon) 1pm 1pm 1pm 12pm (noon) 12pm (noon) 9:30 am
3pm 5pm 1pm 2pm 2pm 2pm 1pm 1pm 10:30 am
4pm 6pm 2pm 3pm 3pm 3pm 2pm 2pm 11:30 am
5pm 7pm 3pm 4pm 4pm 4pm 3pm 3pm 12:30 pm
6pm 8pm 4pm 5pm 5pm 5pm 4pm 4pm 1:30 pm
7pm 9pm 5pm 6pm 6pm 6pm 5pm 5pm 2:30 pm
8pm 10pm 6pm 7pm 7pm 7pm 6pm 6pm 3:30 pm
9pm 11pm 7pm 8pm 8pm 8pm 7pm 7pm 4:30 pm
10pm 12am (midnight) 8pm 9pm 9pm 9pm 8pm 8pm 5:30 pm
11pm 1am 9pm 10pm 10pm 10pm 9pm 9pm 6:30 pm
0:00 2:00 22:00 23:00 23:00 23:00 22:00 22:00 19:30
1:00 3:00 23:00 0:00 0:00 0:00 23:00 23:00 20:30
2:00 4:00 0:00 1:00 1:00 1:00 0:00 0:00 21:30
3:00 5:00 1:00 2:00 2:00 2:00 1:00 1:00 22:30
4:00 6:00 2:00 3:00 3:00 3:00 2:00 2:00 23:30
5:00 7:00 3:00 4:00 4:00 4:00 3:00 3:00 0:30
6:00 8:00 4:00 5:00 5:00 5:00 4:00 4:00 1:30
7:00 9:00 5:00 6:00 6:00 6:00 5:00 5:00 2:30
8:00 10:00 6:00 7:00 7:00 7:00 6:00 6:00 3:30
9:00 11:00 7:00 8:00 8:00 8:00 7:00 7:00 4:30
10:00 12:00 8:00 9:00 9:00 9:00 8:00 8:00 5:30
11:00 13:00 9:00 10:00 10:00 10:00 9:00 9:00 6:30
12:00 14:00 10:00 11:00 11:00 11:00 10:00 10:00 7:30
13:00 15:00 11:00 12:00 12:00 12:00 11:00 11:00 8:30
14:00 16:00 12:00 13:00 13:00 13:00 12:00 12:00 9:30
15:00 17:00 13:00 14:00 14:00 14:00 13:00 13:00 10:30
16:00 18:00 14:00 15:00 15:00 15:00 14:00 14:00 11:30
17:00 19:00 15:00 16:00 16:00 16:00 15:00 15:00 12:30
18:00 20:00 16:00 17:00 17:00 17:00 16:00 16:00 13:30
19:00 21:00 17:00 18:00 18:00 18:00 17:00 17:00 14:30
20:00 22:00 18:00 19:00 19:00 19:00 18:00 18:00 15:30
21:00 23:00 19:00 20:00 20:00 20:00 19:00 19:00 16:30
22:00 0:00 20:00 21:00 21:00 21:00 20:00 20:00 17:30
23:00 1:00 21:00 22:00 22:00 22:00 21:00 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 4, 2021 at 3:00 am local time and clocks were set one hour back to Sunday, April 4, 2021, 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 3, 2021 at 2:00 am local time and clocks are set one hour forward to Sunday, October 3, 2021, 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

New Zealand Standard Time

Offset: NZST is 12 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: Antarctica, New Zealand

Principal Cities: The largest city in the NZST timezone is Auckland from New Zealand with population about 1.535 million people. Other major cities in the area are Wellington, Christchurch, Hamilton, Tauranga

NZST Time Zone Geo Map
NZST 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 New Zealand Daylight Time (NZDT).

Daylight saving time clock moves back for one hour from 3am to 2amStart: New Zealand Standard Time (NZST) started on Sunday, April 4, 2021 at 3:00 am local time and clocks were set one hour back to Sunday, April 4, 2021, 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: New Zealand Standard Time (NZST) ends on Sunday, September 26, 2021 at 2:00 am local time and clocks are set one hour forward to Sunday, September 26, 2021, 3:00 am local daylight time instead. Standard time starts annually the on last Sunday of September.

NZST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +12 - basic short
  • +1200 - basic
  • +12:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1200 - sign character (+) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates twelve 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
  • Mike - Military abbreviation for NZST
  • M - short form of 'Mike'
IANA/Olson: Reflects NZST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland
Time zones with the GMT +12 offset:
  • ANAST - Anadyr Summer Time
  • ANAT - Anadyr Time
  • FJT - Fiji Time
  • GILT - Gilbert Island Time
  • M - Mike Time Zone
  • MAGST - Magadan Summer Time
  • MAGT - Magadan Time
  • MHT - Marshall Islands Time
  • NRT - Nauru Time
  • NZST - New Zealand Standard Time
  • PETST - Kamchatka Summer Time
  • TVT - Tuvalu Time
  • WFT - Wallis and Futuna 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

Japan Standard Time

Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Japan

Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo

Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST 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, Japan Standard Time remains the same

JST Time Zone Geo Map
JST timezone map

JST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine 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
  • India - Military abbreviation for JST
  • I - short form of 'India'
IANA/Olson: Reflects JST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Tokyo
  • Japan
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Eastern Indonesian Time

Offset: WIT is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Indonesia

Principal Cities: The largest city in the WIT timezone is Ambon from Indonesia with population about 355,596 people. Other major cities in the area are Jayapura, Sorong, Ternate, Abepura

Daylight Saving: Eastern Indonesian Time (WIT) is not adjusted for daylight saving therefore WIT 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, Eastern Indonesian Time remains the same

WIT Time Zone Geo Map
WIT timezone map

WIT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine 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
  • India - Military abbreviation for WIT
  • I - short form of 'India'
IANA/Olson: Reflects WIT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jayapura
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Eastern Indonesian Time

Offset: WIT is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Indonesia

Principal Cities: The largest city in the WIT timezone is Ambon from Indonesia with population about 355,596 people. Other major cities in the area are Jayapura, Sorong, Ternate, Abepura

Daylight Saving: Eastern Indonesian Time (WIT) is not adjusted for daylight saving therefore WIT 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, Eastern Indonesian Time remains the same

WIT Time Zone Geo Map
WIT timezone map

WIT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine 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
  • India - Military abbreviation for WIT
  • I - short form of 'India'
IANA/Olson: Reflects WIT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jayapura
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Hong Kong Time

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

Countries: It is used in following countries: Hong Kong

Principal Cities: The largest city in the HKT timezone is Hong Kong from Hong Kong with population about 7.013 million people. Other major cities in the area are Kowloon, Tsuen Wan, Yuen Long Kau Hui, Sha Tin

Daylight Saving: Hong Kong Time (HKT) is not adjusted for daylight saving therefore HKT 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, Hong Kong Time remains the same

HKT Time Zone Geo Map
HKT timezone map

HKT 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 HKT
  • H - short form of 'Hotel'
IANA/Olson: Reflects HKT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Hong_Kong
  • Hongkong
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

Malaysia Time

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

MYT Time Zone Geo Map
MYT timezone map

MYT 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 MYT
  • H - short form of 'Hotel'
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
  • Iran Standard Time - UTC +3:30