HAA
Heure Avancée de l'Atlantique
GMT -3
IST
India Standard Time
GMT +5:30

Time Difference

Heure Avancée de l'Atlantique is 8 hours and 30 minutes behind India Standard Time
8:00 pm20:00 in HAA is 4:30 am04:30 in IST

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

8:00 pm20:00 Heure Avancée de l'Atlantique (HAA). Offset UTC -3:00 hours
4:30 am04:30 India Standard Time (IST). Offset UTC +5:30 hours

8:00 pm20:00 HAA / 4:30 am04:30 IST

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

Heure Avancée de l'Atlantique

Offset: HAA is 3 hours behind Greenwich Mean Time (GMT) and is used in North America

HAA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates three 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
  • Papa - Military abbreviation for HAA
  • P - short form of 'Papa'
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • WGT - West Greenland Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasília time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • SRT - Suriname Time
  • UYT - Uruguay 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