Updating current time…
ET/EDT
Eastern Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ET is not used on this date
This converter uses EDT (GMT -4), the offset New York uses on this date. Open the EDT converter.
CHAST/CHADT
Chatham Island Standard Time
GMT +12:45
tomorrow
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CHADT is not used on September 18, 2026

This converter uses CHAST for Chatham Island.

Quick answers

Selected conversion

The selected date and time will appear here when the converter loads.

How the time difference changes

Depending on seasonal clock changes, ET is 16 hours and 45 minutes behind CHAST, ET is 17 hours and 45 minutes behind CHADT, or ET is 18 hours and 45 minutes behind CHADT.

Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in ET correspond to 1:45 am (next day) to 9:45 am (next day) in CHAST, working hours of 9:00 am to 5:00 pm in ET correspond to 2:45 am (next day) to 10:45 am (next day) in CHADT, or working hours of 9:00 am to 5:00 pm in ET correspond to 3:45 am (next day) to 11:45 am (next day) in CHADT.

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

Time Difference

Eastern Daylight Time is 16 hours and 45 minutes behind Chatham Island Standard Time
11:00 am11:00 in EDT is 3:45 am03:45 in CHAST

EDT to CHAST call time
Best time for a conference call or a meeting is between 4:15pm-5pm in EDT which corresponds to 9am-9:45am in CHAST (next day)

11:00 am11:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
3:45 am03:45 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours

11:00 am11:00 EDT / 3:45 am03:45 CHAST

ETCHAST
12am (midnight)4:45 pm
1am5:45 pm
2am6:45 pm
3am7:45 pm
4am8:45 pm
5am9:45 pm
6am10:45 pm
7am11:45 pm
8am12:45 am
9am1:45 am
10am2:45 am
11am3:45 am
12pm (noon)4:45 am
1pm5:45 am
2pm6:45 am
3pm7:45 am
4pm8:45 am
5pm9:45 am
6pm10:45 am
7pm11:45 am
8pm12:45 pm
9pm1:45 pm
10pm2:45 pm
11pm3:45 pm
00:0016:45
01:0017:45
02:0018:45
03:0019:45
04:0020:45
05:0021:45
06:0022:45
07:0023:45
08:0000:45
09:0001:45
10:0002:45
11:0003:45
12:0004:45
13:0005:45
14:0006:45
15:0007:45
16:0008:45
17:0009:45
18:0010:45
19:0011:45
20:0012:45
21:0013:45
22:0014:45
23:0015:45

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, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States.

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.175 million people. Other major cities in this time zone include Toronto, Montreal, Brooklyn, Borough of Queens.

French: HNE - Heure Normale de l'Est

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

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

Chatham Island Daylight Time

Offset: CHADT is 13 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific

CHADT Time Zone Geo Map
CHADT timezone map

Daylight Saving: Chatham Island Daylight Time (CHADT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Chatham Island Standard Time (CHAST).

End: Chatham Island Daylight Time (CHADT) ended on Sunday, April 5, 2026 at 3:45 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:45 am local standard time instead. Daylight saving ends annually on the first Sunday of April

Start: Chatham Island Daylight Time (CHADT) starts on Sunday, September 27, 2026 at 2:45 am local time and clocks are set one hour forward to Sunday, September 27, 2026, 3:45 am. Daylight saving starts annually on the last Sunday of September

CHADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1345 - basic
  • +13:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1345 - sign character (+) followed by a four digit time providing hours (13) and minutes (45) of the offset. Indicates an offset of thirteen hours and forty-five minutes to the east of the zero meridian.