IST to WT Converter
Quick answers
Selected conversion
5:30 pm17:30 IST (UTC+5:30), Oct 10, 2026 = 12:00 pm12:00 WT (UTC+0), Oct 10, 2026
IST is 5 hours and 30 minutes ahead of WT.
IST and WT examples
These examples always use IST (UTC+5:30) and WT (UTC+0). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
IST is 5 hours and 30 minutes ahead of WT.
How the time difference changes
In 2026, IST is 4 hours and 30 minutes ahead of WST for most of the year. At other times that year, IST is 5 hours and 30 minutes ahead of WT.
In 2026, working hours of 9:00 am to 5:00 pm in IST correspond to 4:30 am to 12:30 pm in WST for most of the year. At other times that year, working hours of 9:00 am to 5:00 pm in IST correspond to 3:30 am to 11:30 am in WT.In 2026, working hours of 09:00 to 17:00 in IST correspond to 04:30 to 12:30 in WST for most of the year. At other times that year, working hours of 09:00 to 17:00 in IST correspond to 03:30 to 11:30 in WT.
Compare IST time with WT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
India Standard Time is 5 hours and 30 minutes ahead of Western Sahara Standard Time.
5:30 pm17:30 in IST is 12:00 pm12:00 in WT
IST to WT call time
Best time for a conference call or a meeting is between 2:30pm-5pm14:30-17:00 in IST which corresponds to 9am-11:30am09:00-11:30 in WT
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
12:00 pm12:00 Western Sahara Standard Time (WT). Offset UTC 0:00 hours
5:30 pm17:30 IST / 12:00 pm12:00 WT
| IST | WT |
|---|---|
| 12:00am | 6:30pm |
| 1:00am | 7:30pm |
| 2:00am | 8:30pm |
| 3:00am | 9:30pm |
| 4:00am | 10:30pm |
| 5:00am | 11:30pm |
| 6:00am | 12:30am |
| 7:00am | 1:30am |
| 8:00am | 2:30am |
| 9:00am | 3:30am |
| 10:00am | 4:30am |
| 11:00am | 5:30am |
| 12:00pm | 6:30am |
| 1:00pm | 7:30am |
| 2:00pm | 8:30am |
| 3:00pm | 9:30am |
| 4:00pm | 10:30am |
| 5:00pm | 11:30am |
| 6:00pm | 12:30pm |
| 7:00pm | 1:30pm |
| 8:00pm | 2:30pm |
| 9:00pm | 3:30pm |
| 10:00pm | 4:30pm |
| 11:00pm | 5:30pm |
| 00:00 | 18:30 |
| 01:00 | 19:30 |
| 02:00 | 20:30 |
| 03:00 | 21:30 |
| 04:00 | 22:30 |
| 05:00 | 23:30 |
| 06:00 | 00:30 |
| 07:00 | 01:30 |
| 08:00 | 02:30 |
| 09:00 | 03:30 |
| 10:00 | 04:30 |
| 11:00 | 05:30 |
| 12:00 | 06:30 |
| 13:00 | 07:30 |
| 14:00 | 08:30 |
| 15:00 | 09:30 |
| 16:00 | 10:30 |
| 17:00 | 11:30 |
| 18:00 | 12:30 |
| 19:00 | 13:30 |
| 20:00 | 14:30 |
| 21:00 | 15:30 |
| 22:00 | 16:30 |
| 23:00 | 17:30 |
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 representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +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.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
Western Sahara Standard Time
Offset: WT is 0 hours 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.
WT representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
- Zulu - Military abbreviation for WT
- Z - short form of 'Zulu'
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone