IST to TST Tst Converter
Time Difference
India Standard Time is 7 hours and 30 minutes behind Tonga Standard Time
1:30 pm13:30 in IST is 9:00 pm21:00 in TST
IST to TST call time
Best time for a conference call or a meeting is between 8am-10:30am in IST which corresponds to 3:30pm-6pm in TST
1:30 pm13:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 pm21:00 Tonga Standard Time (TST). Offset UTC +13:00 hours
1:30 pm13:30 IST / 9:00 pm21:00 TST
| IST | TST |
|---|---|
| 12am (midnight) | 7:30 am |
| 1am | 8:30 am |
| 2am | 9:30 am |
| 3am | 10:30 am |
| 4am | 11:30 am |
| 5am | 12:30 pm |
| 6am | 1:30 pm |
| 7am | 2:30 pm |
| 8am | 3:30 pm |
| 9am | 4:30 pm |
| 10am | 5:30 pm |
| 11am | 6:30 pm |
| 12pm (noon) | 7:30 pm |
| 1pm | 8:30 pm |
| 2pm | 9:30 pm |
| 3pm | 10:30 pm |
| 4pm | 11:30 pm |
| 5pm | 12:30 am |
| 6pm | 1:30 am |
| 7pm | 2:30 am |
| 8pm | 3:30 am |
| 9pm | 4:30 am |
| 10pm | 5:30 am |
| 11pm | 6:30 am |
| 0:00 | 7:30 |
| 1:00 | 8:30 |
| 2:00 | 9:30 |
| 3:00 | 10:30 |
| 4:00 | 11:30 |
| 5:00 | 12:30 |
| 6:00 | 13:30 |
| 7:00 | 14:30 |
| 8:00 | 15:30 |
| 9:00 | 16:30 |
| 10:00 | 17:30 |
| 11:00 | 18:30 |
| 12:00 | 19:30 |
| 13:00 | 20:30 |
| 14:00 | 21:30 |
| 15:00 | 22:30 |
| 16:00 | 23:30 |
| 17:00 | 0:30 |
| 18:00 | 1:30 |
| 19:00 | 2:30 |
| 20:00 | 3:30 |
| 21:00 | 4:30 |
| 22:00 | 5:30 |
| 23:00 | 6:30 |
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, India Standard Time remains the same
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 five hour and thirty minutes time differences 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
- Iran Standard Time - UTC +3:30
Tonga Standard Time
Offset: TST is 13 hours ahead Greenwich Mean Time (GMT) and is used in Pacific
TST representations, usage and related time zones
- +13 - basic short
- +1300 - basic
- +13:00 - extended
- +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates thirteen hour and zero minutes time differences to the east of the zero meridian.
- Tonga Standard Time - UTC +13
- Turkmenistan Standard Time - UTC +5
- 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