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IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EEST
Eastern European Summer Time
GMT +3
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 3, 2026 = 3:00 pm15:00 EEST (UTC+3), Oct 3, 2026

IST is 2 hours and 30 minutes ahead of EEST.

IST and EEST examples

These examples always use IST (UTC+5:30) and EEST (UTC+3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 2 hours and 30 minutes ahead of EEST.

How the time difference changes

For most of the year, IST is 2 hours and 30 minutes ahead of EEST. At other times of the year, IST is 3 hours and 30 minutes ahead of EET.

For most of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 6:30 am to 2:30 pm in EEST. At other times of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 5:30 am to 1:30 pm in EET.For most of the year, working hours of 09:00 to 17:00 in IST correspond to 06:30 to 14:30 in EEST. At other times of the year, working hours of 09:00 to 17:00 in IST correspond to 05:30 to 13:30 in EET.

Compare IST time with EEST 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 European Summer Time.
5:30 pm17:30 in IST is 3:00 pm15:00 in EEST

IST to EEST call time
Best time for a conference call or a meeting is between 11:30am-5pm11:30-17:00 in IST which corresponds to 9am-2:30pm09:00-14:30 in EEST

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
3:00 pm15:00 Eastern European Summer Time (EEST). Offset UTC +3:00 hours

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

ISTEEST
12:00am9:30pm
1:00am10:30pm
2:00am11:30pm
3:00am12:30am
4:00am1:30am
5:00am2:30am
6:00am3:30am
7:00am4:30am
8:00am5:30am
9:00am6:30am
10:00am7:30am
11:00am8:30am
12:00pm9:30am
1:00pm10:30am
2:00pm11:30am
3:00pm12:30pm
4:00pm1:30pm
5:00pm2:30pm
6:00pm3:30pm
7:00pm4:30pm
8:00pm5:30pm
9:00pm6:30pm
10:00pm7:30pm
11:00pm8:30pm
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, Chennai, Kolkata.

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; see upcoming clock changes worldwide.

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 European Summer Time

Offset: EEST is 3 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Åland Islands, Bulgaria, Cyprus, Estonia, Egypt, Finland, Greece, Lebanon, Lithuania, Latvia, Moldova, Palestine, Romania, Ukraine

Principal Cities: The largest city in the EEST time zone is Cairo in Egypt, with about 9.607 million people. Other major cities in this time zone include Alexandria, Kiev, Al Jizah, Beirut.

German: OESZ - Osteuropäische Sommerzeit

EEST Time Zone Geo Map
EEST timezone map

Daylight Saving: Eastern European Summer Time (EEST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Eastern European Time (EET).

Daylight saving time clock moves forward for one hourStart: Eastern European Summer Time (EEST) started on Sunday, March 29, 2026 at 3:00 am03:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 4:00 am04:00. Daylight saving starts annually on the last Sunday of March.

Daylight saving time clock moves back for one hourEnd: Eastern European Summer Time (EEST) ends on Sunday, October 25, 2026 at 4:00 am04:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 3:00 am03:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

EEST 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 EEST
  • C - short form of 'Charlie'
IANA/Olson: Reflects EEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Cairo
  • Asia/Beirut
  • Asia/Famagusta
  • Asia/Gaza
  • Asia/Hebron
  • Asia/Nicosia
  • EET
  • Egypt
  • Europe/Athens
  • Europe/Bucharest
  • Europe/Chisinau
  • Europe/Helsinki
  • Europe/Kiev
  • Europe/Kyiv
  • Europe/Mariehamn
  • Europe/Nicosia
  • Europe/Riga
  • Europe/Sofia
  • Europe/Tallinn
  • Europe/Tiraspol
  • Europe/Uzhgorod
  • Europe/Vilnius
  • Europe/Zaporozhye
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