TOT to IST Converter
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
1:00 am01:00 TOT (UTC+13), Nov 3, 2026 = 5:30 pm17:30 IST (UTC+5:30), Nov 2, 2026
TOT is 7 hours and 30 minutes ahead of IST.
TOT and IST examples
These examples always use TOT (UTC+13) 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.
TOT is 7 hours and 30 minutes ahead of IST.
How the time difference changes
TOT is 7 hours and 30 minutes ahead of IST year-round.
Working hours of 9:00 am to 6:00 pm in TOT correspond to 1:30 am to 10:30 am in IST.Working hours of 09:00 to 18:00 in TOT correspond to 01:30 to 10:30 in IST.
Compare TOT time with IST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Tonga Time is 7 hours and 30 minutes ahead of India Standard Time.
1:00 am01:00 in TOT is 5:30 pm17:30 in IST
TOT to IST call time
Best time for a conference call or a meeting is between 4:30pm-6pm16:30-18:00 in TOT which corresponds to 9am-10:30am09:00-10:30 in IST
1:00 am01:00 Tonga Time (TOT). Offset UTC +13:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
1:00 am01:00 TOT / 5:30 pm17:30 IST
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.
| TOT | IST |
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Tonga Time
Offset: TOT is 13 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Tonga
Principal Cities: The largest city in the TOT time zone is Nuku‘alofa in Tonga, with about 22,400 people. Other major cities in this time zone include Mu‘a, Neiafu, Haveluloto, Tofoa-Koloua.
Daylight Saving: Clocks in Tonga Time (TOT) do not change for daylight saving time, so TOT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
TOT 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 an offset of thirteen hours to the east of the zero meridian.
- 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
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