IST to GMT to Johannesburg to Dubai Time Converter
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Selected conversion
5:30 pm17:30 IST (UTC+5:30), Nov 10, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 10, 2026 = 2:00 pm14:00 SAST (UTC+2), Nov 10, 2026 = 4:00 pm16:00 GST (UTC+4), Nov 10, 2026
IST is 5 hours and 30 minutes ahead of GMT. IST is 3 hours and 30 minutes ahead of Johannesburg. IST is 1 hour and 30 minutes ahead of Dubai.
How the time difference changes
IST to GMT
IST is 5 hours and 30 minutes ahead of GMT year-round.
Working hours of 9:00 am to 6:00 pm in IST correspond to 3:30 am to 12:30 pm in GMT.Working hours of 09:00 to 18:00 in IST correspond to 03:30 to 12:30 in GMT.
IST to Johannesburg
IST is 3 hours and 30 minutes ahead of Johannesburg year-round.
Working hours of 9:00 am to 6:00 pm in IST correspond to 5:30 am to 2:30 pm in Johannesburg.Working hours of 09:00 to 18:00 in IST correspond to 05:30 to 14:30 in Johannesburg.
IST to Dubai
IST is 1 hour and 30 minutes ahead of Dubai year-round.
Working hours of 9:00 am to 6:00 pm in IST correspond to 7:30 am to 4:30 pm in Dubai.Working hours of 09:00 to 18:00 in IST correspond to 07:30 to 16:30 in Dubai.
Compare IST time with GMT, Johannesburg, and Dubai 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 Greenwich Mean Time. India Standard Time is 3 hours and 30 minutes ahead of SAST (South Africa Standard Time). India Standard Time is 1 hour and 30 minutes ahead of GST (Gulf Standard Time).
5:30 pm17:30 in IST is 12:00 pm12:00 in GMT and is 2:00 pm14:00 in Johannesburg, South Africa and is 4:00 pm16:00 in Dubai, United Arab Emirates
IST to GMT call time
Best time for a conference call or a meeting is between 2:30pm-6pm14:30-18:00 in IST which corresponds to 9am-12:30pm09:00-12:30 in GMT.
IST to Johannesburg call time
Best time for a conference call or a meeting is between 12:30pm-6pm12:30-18:00 in IST which corresponds to 9am-2:30pm09:00-14:30 in Johannesburg.
IST to Dubai call time
Best time for a conference call or a meeting is between 10:30am-6pm10:30-18:00 in IST which corresponds to 9am-4:30pm09:00-16:30 in Dubai.
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
2:00 pm14:00 SAST (South Africa Standard Time) (Johannesburg, South Africa). Offset UTC +2:00 hours
4:00 pm16:00 GST (Gulf Standard Time) (Dubai, United Arab Emirates). Offset UTC +4:00 hours
5:30 pm17:30 IST / 12:00 pm12:00 GMT / 2:00 pm14:00 Johannesburg, South Africa / 4:00 pm16:00 Dubai, United Arab Emirates
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| IST | GMT | Johannesburg, South Africa | Dubai, United Arab Emirates |
|---|---|---|---|
| 6:30pm previous day | 8:30pm previous day | 10:30pm previous day | |
| 7:30pm previous day | 9:30pm previous day | 11:30pm previous day | |
| 8:30pm previous day | 10:30pm previous day | 12:30am | |
| 9:30pm previous day | 11:30pm previous day | 1:30am | |
| 10:30pm previous day | 12:30am | 2:30am | |
| 11:30pm previous day | 1:30am | 3:30am | |
| 12:30am | 2:30am | 4:30am | |
| 1:30am | 3:30am | 5:30am | |
| 2:30am | 4:30am | 6:30am | |
| 3:30am | 5:30am | 7:30am | |
| 4:30am | 6:30am | 8:30am | |
| 5:30am | 7:30am | 9:30am | |
| 6:30am | 8:30am | 10:30am | |
| 7:30am | 9:30am | 11:30am | |
| 8:30am | 10:30am | 12:30pm | |
| 9:30am | 11:30am | 1:30pm | |
| 10:30am | 12:30pm | 2:30pm | |
| 11:30am | 1:30pm | 3:30pm | |
| 12:30pm | 2:30pm | 4:30pm | |
| 1:30pm | 3:30pm | 5:30pm | |
| 2:30pm | 4:30pm | 6:30pm | |
| 3:30pm | 5:30pm | 7:30pm | |
| 4:30pm | 6:30pm | 8:30pm | |
| 5:30pm | 7:30pm | 9:30pm | |
| 18:30 previous day | 20:30 previous day | 22:30 previous day | |
| 19:30 previous day | 21:30 previous day | 23:30 previous day | |
| 20:30 previous day | 22:30 previous day | 00:30 | |
| 21:30 previous day | 23:30 previous day | 01:30 | |
| 22:30 previous day | 00:30 | 02:30 | |
| 23:30 previous day | 01:30 | 03:30 | |
| 00:30 | 02:30 | 04:30 | |
| 01:30 | 03:30 | 05:30 | |
| 02:30 | 04:30 | 06:30 | |
| 03:30 | 05:30 | 07:30 | |
| 04:30 | 06:30 | 08:30 | |
| 05:30 | 07:30 | 09:30 | |
| 06:30 | 08:30 | 10:30 | |
| 07:30 | 09:30 | 11:30 | |
| 08:30 | 10:30 | 12:30 | |
| 09:30 | 11:30 | 13:30 | |
| 10:30 | 12:30 | 14:30 | |
| 11:30 | 13:30 | 15:30 | |
| 12:30 | 14:30 | 16:30 | |
| 13:30 | 15:30 | 17:30 | |
| 14:30 | 16:30 | 18:30 | |
| 15:30 | 17:30 | 19:30 | |
| 16:30 | 18:30 | 20:30 | |
| 17:30 | 19:30 | 21:30 |
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
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, Bengaluru, Hyderabad, Ahmedabad.
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.
Current time in India: India time now
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
Greenwich Mean Time
Offset: GMT is the same as Greenwich Mean Time (GMT).
Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara
Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.
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 the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.
Today all shaded areas are on GMT.
GMT 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 GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Coordinated Universal Time
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone