IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AFT
Afghanistan Time
GMT +4:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IST is 1 hour ahead of AFT. IST uses GMT +5:30, and AFT uses GMT +4:30 for this comparison.

For example, 5:30 pm IST is 4:30 pm AFT. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 10am-5pm IST, which is 9am-4pm AFT.

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

Time Difference

India Standard Time is 1 hour ahead of Afghanistan Time
5:30 pm17:30 in IST is 4:30 pm16:30 in AFT

IST to AFT call time
Best time for a conference call or a meeting is between 10am-5pm in IST which corresponds to 9am-4pm in AFT

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
4:30 pm16:30 Afghanistan Time (AFT). Offset UTC +4:30 hours

5:30 pm17:30 IST / 4:30 pm16:30 AFT

ISTAFT
12am (midnight)11pm
1am12am (midnight)
2am1am
3am2am
4am3am
5am4am
6am5am
7am6am
8am7am
9am8am
10am9am
11am10am
12pm (noon)11am
1pm12pm (noon)
2pm1pm
3pm2pm
4pm3pm
5pm4pm
6pm5pm
7pm6pm
8pm7pm
9pm8pm
10pm9pm
11pm10pm
00:0023:00
01:0000:00
02:0001:00
03:0002:00
04:0003:00
05:0004:00
06:0005:00
07:0006:00
08:0007:00
09:0008:00
10:0009:00
11:0010:00
12:0011:00
13:0012:00
14:0013:00
15:0014:00
16:0015:00
17:0016:00
18:0017:00
19:0018:00
20:0019:00
21:0020:00
22:0021:00
23:0022:00

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

Afghanistan Time

Offset: AFT is 4 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Afghanistan

Principal Cities: The largest city in the AFT time zone is Kabul in Afghanistan, with about 3.044 million people. Other major cities in this time zone include Kandahar, Mazar e Sharif, Herat, Jalalabad.

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

AFT Time Zone Geo Map
AFT timezone map

AFT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0430 - basic
  • +04:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
Time zones with the GMT +4:30 offset:
  • AFT - Afghanistan Time
  • IRDT - Iran Daylight Time