HST/HDT
Hawaii Standard Time
GMT -10
HDT automatically adjusted to HST time zone, that is in use
Australia
AEDT

Time Difference

Hawaii Standard Time is 21 hours behind AEDT (Australian Eastern Daylight Time)
5:30 am05:30 in HST is 2:30 am02:30 in Castle Hill, Australia

HDT to Castle Hill call time
Best time for a conference call or a meeting is between 3am-5am in HDT which corresponds to 11pm-1pm in Castle Hill

5:30 am05:30 Hawaii Standard Time (HST). Offset UTC -10:00 hours
2:30 am02:30 AEDT (Australian Eastern Daylight Time) (Castle Hill, Australia). Offset UTC +11:00 hours

5:30 am05:30 HST / 2:30 am02:30 Castle Hill, Australia

HST Castle Hill, Australia
12am (midnight) 9pm
1am 10pm
2am 11pm
3am 12am (midnight)
4am 1am
5am 2am
6am 3am
7am 4am
8am 5am
9am 6am
10am 7am
11am 8am
12pm (noon) 9am
1pm 10am
2pm 11am
3pm 12pm (noon)
4pm 1pm
5pm 2pm
6pm 3pm
7pm 4pm
8pm 5pm
9pm 6pm
10pm 7pm
11pm 8pm
0:00 21:00
1:00 22:00
2:00 23:00
3:00 0:00
4:00 1:00
5:00 2:00
6:00 3:00
7:00 4:00
8:00 5:00
9:00 6:00
10:00 7:00
11:00 8:00
12:00 9:00
13:00 10:00
14:00 11:00
15:00 12:00
16:00 13:00
17:00 14:00
18:00 15:00
19:00 16:00
20:00 17:00
21:00 18:00
22:00 19:00
23:00 20:00

Hawaii Daylight Time

Offset: HDT is 9 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: United States

HDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -09 - basic short
  • -0900 - basic
  • -09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for HDT
  • V - short form of 'Victor'
IANA/Olson: Reflects HDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Adak
  • America/Atka
  • US/Aleutian
Time zones with the GMT -9 offset:
  • AKST - Alaska Standard Time
  • AHDT - Alaska-Hawaii Daylight Time
  • HADT - Hawaii-Aleutian Daylight Time
  • GAMT - Gambier Time
  • HDT - Hawaii Daylight Time
  • V - Victor Time Zone

Castle Hill Information

Time Zone

Abbreviation / Name
AEDT - Australian Eastern Daylight Time
UTC / GMT Offset
+11:00 hours during Australian Eastern Daylight Time, currently in use.

Castle Hill Facts

Country
Australia
Alternative Names
Castle Hill
Population
39,284
Currency
Dollar (AUD)
Geographic Coordinates
33° 43' S Latitude / 151° 00' E Longitude
International Dialing Code
+61