Time difference: Henderson and Sydney

Sydney is 18 hours ahead of Henderson.

Sydney is 18 hours ahead of Henderson. Henderson is UTC-7. Sydney is UTC+11.

Henderson on 15 October 2026: sunrise 06:46, sunset 18:03, day length 11 h 17 min.

Sydney on 15 October 2026: sunrise 06:14, sunset 19:08, day length 12 h 54 min.

For Henderson and Sydney: The next clock change in Henderson is 1 hour back on 1 November 2026 at 02:00, from UTC-7 to UTC-8.

For Sydney and Henderson: The next clock change in Sydney is 1 hour back on 4 April 2027 at 03:00, from UTC+11 to UTC+10.

When the difference changes
Change
The gap changes on 1 November 2026 at 02:00, when clocks in Henderson move back 1 hour.
The gap changes on 14 March 2027 at 02:00, when clocks in Henderson move forward 1 hour.
The gap changes on 4 April 2027 at 03:00, when clocks in Sydney move back 1 hour.
The gap changes on 3 October 2027 at 02:00, when clocks in Sydney move forward 1 hour.
The gap changes on 7 November 2027 at 02:00, when clocks in Henderson move back 1 hour.

Working hours from each side
View	09:00 to 17:00
From Henderson	Henderson 15:00 to 17:00; Sydney 09:00 to 11:00 (next day)
From Sydney	Sydney 09:00 to 11:00; Henderson 15:00 to 17:00 (previous day)

Sun this year
City	Longest day	Shortest day
Henderson with Sydney	21 June 2026, 14 h 37 min	21 December 2026, 9 h 43 min
Sydney with Henderson	22 December 2026, 14 h 25 min	21 June 2026, 9 h 54 min