ChST to EDT Converter

Updating current time…
ChST
Chamorro Standard Time
UTC+10
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EDT
Eastern Daylight Time
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:00 pm22:00 ChST (UTC+10), Oct 12, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 12, 2026

ChST is 14 hours ahead of EDT.

ChST and EDT examples

These examples always use ChST (UTC+10) and EDT (UTC-4). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

ChST is 14 hours ahead of EDT.

How the time difference changes

For most of the year, ChST is 14 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, ChST is 15 hours ahead of EST.

For most of the year, working hours of 9:00 am to 5:00 pm in ChST correspond to 7:00 pm (previous day) to 3:00 am in EDT. At other times of the year, working hours of 9:00 am to 5:00 pm in ChST correspond to 6:00 pm (previous day) to 2:00 am in EST.For most of the year, working hours of 09:00 to 17:00 in ChST correspond to 19:00 (previous day) to 03:00 in EDT. At other times of the year, working hours of 09:00 to 17:00 in ChST correspond to 18:00 (previous day) to 02:00 in EST.

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

Time Difference

Chamorro Standard Time is 14 hours ahead of Eastern Daylight Time.
10:00 pm22:00 in ChST is 8:00 am08:00 in EDT

ChST to EDT call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in ChST which corresponds to 5:30pm-6:30pm17:30-18:30 in EDT (previous day). Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.

10:00 pm22:00 Chamorro Standard Time (ChST). Offset UTC +10:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours

10:00 pm22:00 ChST / 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
ChSTEDT
10:00am previous day
11:00am previous day
12:00pm previous day
1:00pm previous day
2:00pm previous day
3:00pm previous day
4:00pm previous day
5:00pm previous day
6:00pm previous day
7:00pm previous day
8:00pm previous day
9:00pm previous day
10:00pm previous day
11:00pm previous day
12:00am
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00 previous day
11:00 previous day
12:00 previous day
13:00 previous day
14:00 previous day
15:00 previous day
16:00 previous day
17:00 previous day
18:00 previous day
19:00 previous day
20:00 previous day
21:00 previous day
22:00 previous day
23:00 previous day
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00

Chamorro Standard Time

Offset: ChST is 10 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Guam, Northern Mariana Islands

Principal Cities: The largest city in the ChST time zone is Saipan in the Northern Mariana Islands, with about 48,220 people. Other major cities in this time zone include Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Mangilao Village.

Daylight Saving: Clocks in Chamorro Standard Time (ChST) do not change for daylight saving time, so ChST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Chamorro Standard Time (ChST)
ChST all year

Open the world time zone map© OpenStreetMap

ChST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for ChST
  • K - short form of 'Kilo'
IANA/Olson: Reflects ChST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Pacific/Guam
  • Pacific/Saipan
Time zones with the GMT +10 offset:
  • AEST - Australian Eastern Standard Time
  • CHUT - Chuuk Time
  • ChST - Chamorro Standard Time
  • K - Kilo Time Zone
  • KDT - Korea Daylight Time
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Haiti, Turks & Caicos Is, United States

Principal Cities: The largest city in the EDT 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: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

Map of the areas on Eastern Daylight Time (EDT)
EDT part of the year

Today all shaded areas are on EDT.

Open the world time zone map© OpenStreetMap

Daylight Saving: Eastern Daylight Time (EDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Eastern Standard Time (EST).

123456789101112Start: Eastern Daylight Time (EDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Eastern Daylight Time (EDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

EDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'
IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT