IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EAT
Eastern Africa Time
GMT +3
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IST is 2 hours and 30 minutes ahead of EAT. IST uses GMT +5:30, and EAT uses GMT +3 for this comparison.

For example, 5:30 pm IST is 3:00 pm EAT. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 11:30am-5pm IST, which is 9am-2:30pm EAT.

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

Time Difference

India Standard Time is 2 hours and 30 minutes ahead of Eastern Africa Time
5:30 pm17:30 in IST is 3:00 pm15:00 in EAT

IST to EAT call time
Best time for a conference call or a meeting is between 11:30am-5pm in IST which corresponds to 9am-2:30pm in EAT

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
3:00 pm15:00 Eastern Africa Time (EAT). Offset UTC +3:00 hours

5:30 pm17:30 IST / 3:00 pm15:00 EAT

ISTEAT
12am (midnight)9:30 pm
1am10:30 pm
2am11:30 pm
3am12:30 am
4am1:30 am
5am2:30 am
6am3:30 am
7am4:30 am
8am5:30 am
9am6:30 am
10am7:30 am
11am8:30 am
12pm (noon)9:30 am
1pm10:30 am
2pm11:30 am
3pm12:30 pm
4pm1:30 pm
5pm2:30 pm
6pm3:30 pm
7pm4:30 pm
8pm5:30 pm
9pm6:30 pm
10pm7:30 pm
11pm8:30 pm
00:0021:30
01:0022:30
02:0023:30
03:0000:30
04:0001:30
05:0002:30
06:0003:30
07:0004:30
08:0005:30
09:0006:30
10:0007:30
11:0008:30
12:0009:30
13:0010:30
14:0011:30
15:0012:30
16:0013:30
17:0014:30
18:0015:30
19:0016:30
20:0017:30
21:0018:30
22:0019:30
23:0020:30

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

Eastern Africa Time

Offset: EAT is 3 hours ahead Greenwich Mean Time (GMT) and is used in Africa

Countries using this time zone: Djibouti, Eritrea, Ethiopia, Kenya, Comoros, Madagascar, Somalia, Tanzania, Uganda, Mayotte

Principal Cities: The largest city in the EAT time zone is Addis Ababa in Ethiopia, with about 2.758 million people. Other major cities in this time zone include Nairobi, Dar es Salaam, Mogadishu, Antananarivo.

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

EAT Time Zone Geo Map
EAT timezone map

EAT 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 an offset of three hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Charlie - Military abbreviation for EAT
  • C - short form of 'Charlie'
IANA/Olson: Reflects EAT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Addis_Ababa
  • Africa/Asmara
  • Africa/Asmera
  • Africa/Dar_es_Salaam
  • Africa/Djibouti
  • Africa/Kampala
  • Africa/Mogadishu
  • Africa/Nairobi
  • Indian/Antananarivo
  • Indian/Comoro
  • Indian/Mayotte
Time zones with the GMT +3 offset:
  • EEST - Eastern European Summer Time
  • MSK - Moscow Standard Time
  • AST - Arabia Standard Time
  • C - Charlie Time Zone
  • EAT - Eastern Africa Time
  • FET - Further Eastern European Time
  • IDT - Israel Daylight Time
  • TRT - Turkey Time