IST to Sydney, Australia to Bangkok, Thailand
Compare IST time with Sydney and Bangkok 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 behind AEDT (Australian Eastern Daylight Time) and 1 hour and 30 minutes behind ICT (Indochina Time)
5:30 pm17:30 in IST is 11:00 pm23:00 in Sydney, Australia and is 7:00 pm19:00 in Bangkok, Thailand
IST to Sydney call time
Best time for a conference call or a meeting is between 9am-11:30am in IST which corresponds to 2:30pm-5pm in Sydney
IST to Bangkok call time
Best time for a conference call or a meeting is between 9am-3:30pm in IST which corresponds to 10:30am-5pm in Bangkok
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
11:00 pm23:00 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours
7:00 pm19:00 ICT (Indochina Time) (Bangkok, Thailand). Offset UTC +7:00 hours
5:30 pm17:30 IST / 11:00 pm23:00 Sydney, Australia / 7:00 pm19:00 Bangkok, Thailand
| IST | Sydney, Australia | Bangkok, Thailand |
|---|---|---|
| 12am (midnight) | 5:30 am | 1:30 am |
| 1am | 6:30 am | 2:30 am |
| 2am | 7:30 am | 3:30 am |
| 3am | 8:30 am | 4:30 am |
| 4am | 9:30 am | 5:30 am |
| 5am | 10:30 am | 6:30 am |
| 6am | 11:30 am | 7:30 am |
| 7am | 12:30 pm | 8:30 am |
| 8am | 1:30 pm | 9:30 am |
| 9am | 2:30 pm | 10:30 am |
| 10am | 3:30 pm | 11:30 am |
| 11am | 4:30 pm | 12:30 pm |
| 12pm (noon) | 5:30 pm | 1:30 pm |
| 1pm | 6:30 pm | 2:30 pm |
| 2pm | 7:30 pm | 3:30 pm |
| 3pm | 8:30 pm | 4:30 pm |
| 4pm | 9:30 pm | 5:30 pm |
| 5pm | 10:30 pm | 6:30 pm |
| 6pm | 11:30 pm | 7:30 pm |
| 7pm | 12:30 am | 8:30 pm |
| 8pm | 1:30 am | 9:30 pm |
| 9pm | 2:30 am | 10:30 pm |
| 10pm | 3:30 am | 11:30 pm |
| 11pm | 4:30 am | 12:30 am |
| 00:00 | 05:30 | 01:30 |
| 01:00 | 06:30 | 02:30 |
| 02:00 | 07:30 | 03:30 |
| 03:00 | 08:30 | 04:30 |
| 04:00 | 09:30 | 05:30 |
| 05:00 | 10:30 | 06:30 |
| 06:00 | 11:30 | 07:30 |
| 07:00 | 12:30 | 08:30 |
| 08:00 | 13:30 | 09:30 |
| 09:00 | 14:30 | 10:30 |
| 10:00 | 15:30 | 11:30 |
| 11:00 | 16:30 | 12:30 |
| 12:00 | 17:30 | 13:30 |
| 13:00 | 18:30 | 14:30 |
| 14:00 | 19:30 | 15:30 |
| 15:00 | 20:30 | 16:30 |
| 16:00 | 21:30 | 17:30 |
| 17:00 | 22:30 | 18:30 |
| 18:00 | 23:30 | 19:30 |
| 19:00 | 00:30 | 20:30 |
| 20:00 | 01:30 | 21:30 |
| 21:00 | 02:30 | 22:30 |
| 22:00 | 03:30 | 23:30 |
| 23:00 | 04:30 | 00:30 |
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, 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 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
Sydney Information
Time Zone
AEDT - Australian Eastern Daylight Time
+11:00 hours during Australian Eastern Daylight Time.
Sunday, October 4, 2026 at 2:00 am local time. DST starts annually on the 1st Sunday of October. Clocks are turned forward 1 hour to Sunday, October 4, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Sunday, April 5, 2026 at 3:00 am local time. DST ends annually on the 1st Sunday of April. Clocks are turned backward 1 hour to Sunday, April 5, 2026 at 2:00 am local standard time instead. Also called Fall Back or switch to Winter Time.