UTC
Universal Time Coordinated
GMT +0
IST
India Standard Time
GMT +5:30
AKDT
Alaska Daylight Time
GMT -8

Time Difference

Universal Time Coordinated is 5 hours and 30 minutes behind India Standard Time and 8 hours ahead of Alaska Daylight Time
3:30 am03:30 in UTC is 9:00 am09:00 in IST and is 7:30 pm19:30 in AKDT

UTC to IST call time
Best time for a conference call or a meeting is between 8am-12:30pm in UTC which corresponds to 1:30pm-6pm in IST
UTC to AKDT call time
Best time for a conference call or a meeting is between 4pm-6pm in UTC which corresponds to 8am-10am in AKDT

3:30 am03:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
9:00 am09:00 India Standard Time (IST). Offset UTC +5:30 hours
7:30 pm19:30 Alaska Daylight Time (AKDT). Offset UTC -8:00 hours

3:30 am03:30 UTC / 9:00 am09:00 IST / 7:30 pm19:30 AKDT

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

Universal Time Coordinated

Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

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

Alaska Daylight Time

Offset: AKDT is 8 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: United States

Principal Cities: The largest city in the AKDT timezone is Anchorage from USA with population about 291,826 people. Other major cities in the area are Fairbanks, Juneau, Eagle River, Badger

AKDT Time Zone Geo Map
AKDT timezone map

Daylight Saving: Alaska Daylight Time (AKDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Alaska Standard Time (AKST).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Alaska Daylight Time (AKDT) started 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. Daylight saving starts annually the on second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Alaska Daylight Time (AKDT) ends 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 local standard time instead. Daylight saving ends annually the on first Sunday of November

AKDT 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 west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for AKDT
  • U - short form of 'Uniform'
IANA/Olson: Reflects AKDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Anchorage
  • America/Juneau
  • America/Metlakatla
  • America/Nome
  • America/Sitka
  • America/Yakutat
  • US/Alaska
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone