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WST to IST Converter

Updating current time…
WT/WST
Western Sahara Standard Time
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
WST is not used on this date.

This converter uses WT (UTC+0), as in El Aaiun.

Keep WST (UTC+1)
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

12:00 pm12:00 WT (UTC+0), Oct 10, 2026 = 5:30 pm17:30 IST (UTC+5:30), Oct 10, 2026

WT is 5 hours and 30 minutes behind IST.

WST and IST examples

These examples always use WST (UTC+1) and IST (UTC+5:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

WST is 4 hours and 30 minutes behind IST.

How the time difference changes

In 2026, WST is 4 hours and 30 minutes behind IST for most of the year. At other times that year, WT is 5 hours and 30 minutes behind IST.

In 2026, working hours of 9:00 am to 5:00 pm in WST correspond to 1:30 pm to 9:30 pm in IST for most of the year. At other times that year, working hours of 9:00 am to 5:00 pm in WT correspond to 2:30 pm to 10:30 pm in IST.In 2026, working hours of 09:00 to 17:00 in WST correspond to 13:30 to 21:30 in IST for most of the year. At other times that year, working hours of 09:00 to 17:00 in WT correspond to 14:30 to 22:30 in IST.

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

Time Difference

Western Sahara Standard Time is 5 hours and 30 minutes behind India Standard Time.
12:00 pm12:00 in WT is 5:30 pm17:30 in IST

WT to IST call time
Best time for a conference call or a meeting is between 9am-11:30am09:00-11:30 in WT which corresponds to 2:30pm-5pm14:30-17:00 in IST

12:00 pm12:00 Western Sahara Standard Time (WT). Offset UTC 0:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours

12:00 pm12:00 WT / 5:30 pm17:30 IST

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

Western Sahara Summer Time

Offset: WST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Africa

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

WST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for WST
  • A - short form of 'Alpha'
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 +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT