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EDT to ACST Converter

Updating current time…
EDT
Eastern Daylight Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ACST
Australian Central Standard Time
GMT +9:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am08:00 EDT (UTC-4), Oct 3, 2026 = 9:30 pm21:30 ACST (UTC+9:30), Oct 3, 2026

EDT is 13 hours and 30 minutes behind ACST.

EDT and ACST examples

These examples always use EDT (UTC-4) and ACST (UTC+9:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

EDT is 13 hours and 30 minutes behind ACST.

How the time difference changes

For most of the year, EDT is 13 hours and 30 minutes behind ACST. At other times of the year, EST is 14 hours and 30 minutes behind ACST.

For most of the year, working hours of 9:00 am to 5:00 pm in EDT correspond to 10:30 pm to 6:30 am (next day) in ACST. At other times of the year, working hours of 9:00 am to 5:00 pm in EST correspond to 11:30 pm to 7:30 am (next day) in ACST.For most of the year, working hours of 09:00 to 17:00 in EDT correspond to 22:30 to 06:30 (next day) in ACST. At other times of the year, working hours of 09:00 to 17:00 in EST correspond to 23:30 to 07:30 (next day) in ACST.

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

Time Difference

Eastern Daylight Time is 13 hours and 30 minutes behind Australian Central Standard Time.
8:00 am08:00 in EDT is 9:30 pm21:30 in ACST

EDT to ACST call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in EDT which corresponds to 7:30am-8:30am07:30-08:30 in ACST (next day)

8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
9:30 pm21:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours

8:00 am08:00 EDT / 9:30 pm21:30 ACST

EDTACST
12:00am1:30pm
1:00am2:30pm
2:00am3:30pm
3:00am4:30pm
4:00am5:30pm
5:00am6:30pm
6:00am7:30pm
7:00am8:30pm
8:00am9:30pm
9:00am10:30pm
10:00am11:30pm
11:00am12:30am
12:00pm1:30am
1:00pm2:30am
2:00pm3:30am
3:00pm4:30am
4:00pm5:30am
5:00pm6:30am
6:00pm7:30am
7:00pm8:30am
8:00pm9:30am
9:00pm10:30am
10:00pm11:30am
11:00pm12:30pm
00:0013:30
01:0014:30
02:0015:30
03:0016:30
04:0017:30
05:0018:30
06:0019:30
07:0020:30
08:0021:30
09:0022:30
10:0023:30
11:0000:30
12:0001:30
13:0002:30
14:0003:30
15:0004:30
16:0005:30
17:0006:30
18:0007:30
19:0008:30
20:0009:30
21:0010:30
22:0011:30
23:0012:30

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

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, Brooklyn, Borough of Queens, Montreal.

French: HAE - Heure Avancée de l'Est

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

EDT Time Zone Geo Map
EDT timezone map

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).

Daylight saving time clock moves forward for one hourStart: 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.

Daylight saving time clock moves back for one hourEnd: 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

Australian Central Standard Time

Offset: ACST is 9 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia

Countries using this time zone: Australia

Principal Cities: The largest city in the ACST time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Darwin, Adelaide Hills, Palmerston, Alice Springs.

ACST Time Zone Geo Map
ACST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Central Daylight Time (ACDT).

Daylight saving time clock moves back for one hourStart: Australian Central Standard Time (ACST) started on Sunday, April 5, 2026 at 3:00 am03:00 local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

Daylight saving time clock moves forward for one hourEnd: Australian Central Standard Time (ACST) ends on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.

See upcoming clock changes worldwide.

ACST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0930 - basic
  • +09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/Darwin
  • Australia/North
  • Australia/South
  • Australia/Yancowinna
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT