Updating current time…

No shared working hoursSat, Oct 17

TOT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ET/EDT
UTC−4
yesterday (previous day)
17h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

1:00 am01:00 TOT (UTC+13), Oct 17, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 16, 2026

TOT is 17 hours ahead of EDT.

How the time difference changes

For most of the year, TOT is 17 hours ahead of ET. From Nov 1, 2026 to Mar 14, 2027, TOT is 18 hours ahead of ET.

For most of the year, working hours of 9:00 am to 6:00 pm in TOT correspond to 4:00 pm (previous day) to 1:00 am in ET. At other times of the year, working hours of 9:00 am to 6:00 pm in TOT correspond to 3:00 pm (previous day) to 12:00 am in ET.For most of the year, working hours of 09:00 to 18:00 in TOT correspond to 16:00 (previous day) to 01:00 in ET. At other times of the year, working hours of 09:00 to 18:00 in TOT correspond to 15:00 (previous day) to 00:00 in ET.

Compare TOT time with ET time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Tonga Time is 17 hours ahead of Eastern Daylight Time.
1:00 am01:00 in TOT is 8:00 am08:00 in EDT

TOT to EDT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in TOT which corresponds to 4pm-6pm16:00-18:00 in EDT (previous day)

1:00 am01:00 Tonga Time (TOT). Offset UTC +13:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours

1:00 am01:00 TOT / 8:00 am08:00 EDT

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.

Hourly time comparison
TOTET
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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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Time zones with the GMT +13 offset:
  • 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

Eastern Time

Eastern Time (ET) is a general term used to describe the areas that observe either the Eastern Standard Time (EST) or Eastern Daylight Time (EDT) in the United States and Canada. ET is not static but switches between EDT and EST.

ET is also used somewhat as a de facto official time for all of the United States because it encompasses 17 U.S. states in the eastern part of the contiguous United States including the capital city Washington D.C., the most populous city New York and half of the country’s population.

In the United States nationally televised programs, evening newscasts, talent and awards shows, and any other nationally televised event that airs live on American television during prime time and on the weekends are broadcast live in the Eastern Time Zone. Major professional sports leagues MLB, NBA, NFL and NHL also provide their game times in Eastern Time, even if teams are from outside of Eastern Time.

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the ET time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

Map of the areas on Eastern Time (ET)
ET all year ET part of the year

Today the lighter areas are on UTC−5 (Central Daylight Time, EST).

ET representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for ET
  • R - short form of 'Romeo'
ET Abbreviation: Several time zones share ET abbreviation and it could refer to these time zones
  • Eastern Time - UTC -5
  • Tiempo del Este - UTC -5
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone