IST
India Standard Time
GMT +5:30
-06/-05
GMT -6
-05 automatically adjusted to -06 time zone, that is in use

Time Difference

India Standard Time is 11 hours and 30 minutes ahead of
12:00 am00:00 in IST is 12:30 pm12:30 in -06

IST to -05 call time
Best time for a conference call or a meeting is between 6pm-8pm in IST which corresponds to 7:30am-9:30am in -05

12:00 am00:00 India Standard Time (IST). Offset UTC +5:30 hours
12:30 pm12:30 (-06). Offset UTC -6:00 hours

12:00 am00:00 IST / 12:30 pm12:30 -06

IST -06
12am (midnight) 12:30 pm
1am 1:30 pm
2am 2:30 pm
3am 3:30 pm
4am 4:30 pm
5am 5:30 pm
6am 6:30 pm
7am 7:30 pm
8am 8:30 pm
9am 9:30 pm
10am 10:30 pm
11am 11:30 pm
12pm (noon) 12:30 am
1pm 1:30 am
2pm 2:30 am
3pm 3:30 am
4pm 4:30 am
5pm 5:30 am
6pm 6:30 am
7pm 7:30 am
8pm 8:30 am
9pm 9:30 am
10pm 10:30 am
11pm 11:30 am
0:00 12:30
1:00 13:30
2:00 14:30
3:00 15:30
4:00 16:30
5:00 17:30
6:00 18:30
7:00 19:30
8:00 20:30
9:00 21:30
10:00 22:30
11:00 23:30
12:00 0:30
13:00 1:30
14:00 2:30
15:00 3:30
16:00 4:30
17:00 5:30
18:00 6:30
19:00 7:30
20:00 8:30
21:00 9:30
22:00 10:30
23:00 11:30

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

-05

Offset: -05 is 5 hours behind Greenwich Mean Time (GMT) and is used in America

Countries: It is used in following countries: Brazil, Chile, Colombia, Ecuador, Peru

Principal Cities: The largest city in the -05 timezone is Lima from Peru with population about 7.737 million people. Other major cities in the area are Bogota, Cali, Medellin, Guayaquil

Daylight Saving: (-05) is a daylight saving/summer timezone, however during winter some places adjust time for one hour back and observe (-06).

End: -05 ended and clocks were set one hour back on Saturday, 03 April 2021, at 22:00 (22:00 pm) local time.

Start: -05 starts and clocks are set one hour forward on Saturday, 04 September 2021, at 22:00 (22:00 pm) local time.

-05 representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates five 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
  • Romeo - Military abbreviation for -05
  • R - short form of 'Romeo'
IANA/Olson: Reflects -05 time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Bogota
  • America/Eirunepe
  • America/Guayaquil
  • America/Lima
  • America/Porto_Acre
  • America/Rio_Branco
  • Brazil/Acre
  • Chile/EasterIsland
  • Etc/GMT+5
  • Pacific/Easter
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone
  • -05 -