IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
COT
Colombia Time
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IST is 10 hours and 30 minutes ahead of COT. IST uses GMT +5:30, and COT uses GMT -5 for this comparison.

For example, 5:30 pm IST is 7:00 am COT. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 6pm-7pm IST, which is 7:30am-8:30am COT.

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

Time Difference

India Standard Time is 10 hours and 30 minutes ahead of Colombia Time
5:30 pm17:30 in IST is 7:00 am07:00 in COT

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

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
7:00 am07:00 Colombia Time (COT). Offset UTC -5:00 hours

5:30 pm17:30 IST / 7:00 am07:00 COT

ISTCOT
12am (midnight)1:30 pm
1am2:30 pm
2am3:30 pm
3am4:30 pm
4am5:30 pm
5am6:30 pm
6am7:30 pm
7am8:30 pm
8am9:30 pm
9am10:30 pm
10am11:30 pm
11am12:30 am
12pm (noon)1:30 am
1pm2:30 am
2pm3:30 am
3pm4:30 am
4pm5:30 am
5pm6:30 am
6pm7:30 am
7pm8:30 am
8pm9:30 am
9pm10:30 am
10pm11:30 am
11pm12:30 pm
00:0013:30
01:0014:30
02:0015:30
03:0016:30
04:0017:30
05:0018:30
06:0019:30
07:0020:30
08:0021:30
09:0022:30
10:0023:30
11:0000:30
12:0001:30
13:0002:30
14:0003:30
15:0004:30
16:0005:30
17:0006:30
18:0007:30
19:0008:30
20:0009:30
21:0010:30
22:0011:30
23:0012:30

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bangalore, Kolkata, Chennai.

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

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 an offset of five hours and thirty minutes 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

Colombia Time

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

Countries using this time zone: Colombia

Principal Cities: The largest city in the COT time zone is Bogota in Colombia, with about 7.674 million people. Other major cities in this time zone include Cali, Medellin, Barranquilla, Cartagena.

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

COT Time Zone Geo Map
COT timezone map

COT 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 an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for COT
  • R - short form of 'Romeo'
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