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IST to GFT Converter

Updating current time…
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GFT
French Guiana Time
GMT -3
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 12, 2026 = 9:00 am09:00 GFT (UTC-3), Oct 12, 2026

IST is 8 hours and 30 minutes ahead of GFT.

IST and GFT examples

These examples always use IST (UTC+5:30) and GFT (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 8 hours and 30 minutes ahead of GFT.

How the time difference changes

IST is 8 hours and 30 minutes ahead of GFT year-round.

Working hours of 9:00 am to 5:00 pm in IST correspond to 12:30 am to 8:30 am in GFT.Working hours of 09:00 to 17:00 in IST correspond to 00:30 to 08:30 in GFT.

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

Time Difference

India Standard Time is 8 hours and 30 minutes ahead of French Guiana Time.
5:30 pm17:30 in IST is 9:00 am09:00 in GFT

IST to GFT call time
Best time for a conference call or a meeting is between 5pm-6pm17:00-18:00 in IST which corresponds to 8:30am-9:30am08:30-09:30 in GFT

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 French Guiana Time (GFT). Offset UTC -3:00 hours

5:30 pm17:30 IST / 9:00 am09:00 GFT

ISTGFT
12:00am3:30pm
1:00am4:30pm
2:00am5:30pm
3:00am6:30pm
4:00am7:30pm
5:00am8:30pm
6:00am9:30pm
7:00am10:30pm
8:00am11:30pm
9:00am12:30am
10:00am1:30am
11:00am2:30am
12:00pm3:30am
1:00pm4:30am
2:00pm5:30am
3:00pm6:30am
4:00pm7:30am
5:00pm8:30am
6:00pm9:30am
7:00pm10:30am
8:00pm11:30am
9:00pm12:30pm
10:00pm1:30pm
11:00pm2:30pm
00:0015:30
01:0016:30
02:0017:30
03:0018:30
04:0019:30
05:0020:30
06:0021:30
07:0022:30
08:0023:30
09:0000:30
10:0001:30
11:0002:30
12:0003:30
13:0004:30
14:0005:30
15:0006:30
16:0007:30
17:0008:30
18:0009:30
19:0010:30
20:0011:30
21:0012:30
22:0013:30
23:0014:30

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

French Guiana Time

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

Countries using this time zone: French Guiana

Principal Cities: The largest city in the GFT time zone is Cayenne in French Guiana, with about 61,550 people. Other major cities in this time zone include Matoury, Saint Laurent du Maroni, Kourou, Remire Montjoly.

Daylight Saving: Clocks in French Guiana Time (GFT) do not change for daylight saving time, so GFT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

GFT Time Zone Geo Map
GFT timezone map

GFT 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 west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for GFT
  • 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
  • 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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT