Updating current time…
ACDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GuamChST
UTC+10
30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:30 pm22:30 ACDT (UTC+10:30), Oct 16, 2026 = 10:00 pm22:00 ChST (UTC+10), Oct 16, 2026

ACDT is 30 minutes ahead of Hagåtña.

How the time difference changes

Depending on seasonal clock changes, ACDT is 30 minutes ahead of Hagatna or ACST is 30 minutes behind Hagatna.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACDT correspond to 8:30 am to 5:30 pm in Hagatna or working hours of 9:00 am to 6:00 pm in ACST correspond to 9:30 am to 6:30 pm in Hagatna.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACDT correspond to 08:30 to 17:30 in Hagatna or working hours of 09:00 to 18:00 in ACST correspond to 09:30 to 18:30 in Hagatna.

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

Time Difference

Australian Central Daylight Time is 30 minutes ahead of ChST (Chamorro Standard Time).
10:30 pm22:30 in ACDT is 10:00 pm22:00 in Hagatna, Guam

ACDT to Hagåtña call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in ACDT which corresponds to 9am-5:30pm09:00-17:30 in Hagåtña

10:30 pm22:30 Australian Central Daylight Time (ACDT). Offset UTC +10:30 hours
10:00 pm22:00 ChST (Chamorro Standard Time) (Hagatna, Guam). Offset UTC +10:00 hours

10:30 pm22:30 ACDT / 10:00 pm22:00 Hagatna, Guam

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Hourly time comparison
ACDTHagatna, Guam
11:30pm previous day
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23:30 previous day
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Australian Central Daylight Time

Offset: ACDT is 10 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the ACDT time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Mount Gambier, Mount Barker, Whyalla, Gawler.

Map of the areas on Australian Central Daylight Time (ACDT)
ACDT part of the year

Today all shaded areas are on ACDT.

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

123456789101112Start: Australian Central Daylight Time (ACDT) started on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00. Daylight saving starts annually on the first Sunday of October.

123456789101112End: Australian Central Daylight Time (ACDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

ACDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1030 - basic
  • +10:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/South
  • Australia/Yancowinna
Time zones with the GMT +10:30 offset:
  • ACDT - Australian Central Daylight Time
  • LHST - Lord Howe Standard Time

Hagåtña Time Zone and Facts

Time Zone

Abbreviation / Offset
ChST – Chamorro Standard Time, UTC+10 (no daylight saving time)

Hagåtña Facts

Country
Guam
Alternative Names
Agadna, Agana, Agana -1998, Agania, Aganija, Aganja, Agano, Agaña, Aguana, Akashi, Akashi - JP renamed WW2, Ankana, City of Ignacio de Agana, City of Saint Ignacio de Agana, Ciudad de San Ignacio de Agana, Hagadna, Hagatna, Hagåtña, Haqatna, Jagatna, Khagatna, San Ignacio de Agana *, Ville d'Agana, Vjoska Agan'ja, a jia ni ya, akatna, ha katya, hagania, hagasnya, hagatna, hagatnya, haghatnya, hegatn'ya, Αγκάνα, Вёска Аганья, Хагатна, Хагатња, Հագատնա, هاغاتنيا, هاگاتنا, هاگاتنیا, हेगात्न्या, அகாத்ன, ฮากาตญา, ჰაგატნა, ハガニア, 阿加尼亚, 하갓냐
Population
1,051
Currency
Dollar (USD)
Geographic Coordinates
13° 28' N Latitude / 144° 44' E Longitude