Updating current time…
CT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
TOT
UTC+13
tomorrow (next day)
19h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

6:00 am06:00 CT (UTC-6), Nov 12, 2026 = 1:00 am01:00 TOT (UTC+13), Nov 13, 2026

CT is 19 hours behind TOT.

How the time difference changes

For most of the year, CT is 18 hours behind TOT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, CT is 19 hours behind TOT.

For most of the year, working hours of 9:00 am to 6:00 pm in CT correspond to 3:00 am (next day) to 12:00 pm (next day) in TOT. At other times of the year, working hours of 9:00 am to 6:00 pm in CT correspond to 4:00 am (next day) to 1:00 pm (next day) in TOT.For most of the year, working hours of 09:00 to 18:00 in CT correspond to 03:00 (next day) to 12:00 (next day) in TOT. At other times of the year, working hours of 09:00 to 18:00 in CT correspond to 04:00 (next day) to 13:00 (next day) in TOT.

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

Time Difference

Central Time is 19 hours behind Tonga Time.
6:00 am06:00 in CT is 1:00 am01:00 in TOT (next day)

CT to TOT call time
Best time for a conference call or a meeting is between 2pm-6pm14:00-18:00 in CT which corresponds to 9am-1pm09:00-13:00 in TOT (next day).

6:00 am06:00 Central Time (CT). Offset UTC -6:00 hours
1:00 am01:00 Tonga Time (TOT). Offset UTC +13:00 hours

6:00 am06:00 CT / 1:00 am01:00 TOT (next day)

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Hourly time comparison
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Central Time

Central Time (CT) is a general term used to describe the areas that observe either the Central Standard Time (CST) or Central Daylight Time (CDT) in the United States and Canada. CT is not static but switches between CDT and CST.

Territories observing the time zone are primarily in North and Central America. It runs through several Mexican and U.S. states, as well as several Canadian provinces and Central American countries.

Countries using this time zone: Belize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States

Principal Cities: The largest city in the CT time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Puebla, Santiago de Querétaro.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

Map of the areas on Central Time (CT)
CT all year CT part of the year

Today all shaded areas are on CT.

CT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for CT
  • S - short form of 'Sierra'
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone

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