Updating current time…
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
WST
West Samoa Time
GMT +13
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 11, 2026 = 1:00 am01:00 WST (UTC+13), Oct 12, 2026

IST is 7 hours and 30 minutes behind WST.

IST and WST examples

These examples always use IST (UTC+5:30) and WST (UTC+13). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 7 hours and 30 minutes behind WST.

How the time difference changes

IST is 7 hours and 30 minutes behind WST Pacific year-round.

Working hours of 9:00 am to 5:00 pm in IST correspond to 4:30 pm to 12:30 am (next day) in WST Pacific.Working hours of 09:00 to 17:00 in IST correspond to 16:30 to 00:30 (next day) in WST Pacific.

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

Time Difference

India Standard Time is 7 hours and 30 minutes behind West Samoa Time.
5:30 pm17:30 in IST is 1:00 am01:00 in WST

IST to WST call time
Best time for a conference call or a meeting is between 9am-9:30am09:00-09:30 in IST which corresponds to 4:30pm-5pm16:30-17:00 in WST

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
1:00 am01:00 West Samoa Time (WST). Offset UTC +13:00 hours

5:30 pm17:30 IST / 1:00 am01:00 WST

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

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

West Samoa Time

Offset: WST is 13 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: Samoa (western)

Principal Cities: The largest city in the WST time zone is Apia in Samoa, with about 40,407 people.

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

WST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates an offset of thirteen hours to the east of the zero meridian.
WST Abbreviation: Several time zones share WST abbreviation and it could refer to these time zones
  • Western Sahara Summer Time - UTC +1
  • West Samoa Time - UTC +13
Time zones with the GMT +13 offset:
  • FJST - Fiji Summer Time
  • NZDT - New Zealand Daylight Time
  • PHOT - Phoenix Island Time
  • TKT - Tokelau Time
  • TOT - Tonga Time
  • WST - West Samoa Time
  • WSST - West Samoa Standard Time