Observatory log
New York and Perth, compared
- 01Difference now
Perth is 12 hours ahead of New York.
New York: EDT (UTC−4) · Perth: AWST (UTC+8)
Next changeFrom 1 November 2026: Perth is 13 hours ahead of New York.
- 02Through 2026–2027
- 1 January 2026 – 8 March 2026+13 h
- 8 March 2026 – 1 November 2026+12 h
- 1 November 2026 – 14 March 2027+13 h
- 14 March 2027 – 7 November 2027+12 h
- 7 November 2027 – 31 December 2027+13 h
Difference of Perth from New York. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–10:00 in New York = 21:00–22:00 in Perth
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Mon–Thu: 21:00–22:00 in New York = 09:00–10:00 in Perth (tomorrow) · 1 h.
- 05Weekend
New York: Saturday and Sunday
Perth: Saturday and Sunday
24 hours
A day in New York, in Perth
| New York | Perth | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:00 | |
| 01:00 | 13:00 | |
| 02:00 | 14:00 | |
| 03:00 | 15:00 | |
| 04:00 | 16:00 | |
| 05:00 | 17:00 | |
| 06:00 | 18:00 | |
| 07:00 | 19:00 | |
| 08:00 | 20:00 | |
| 09:00 | 21:00 | |
| 10:00 | 22:00 | |
| 11:00 | 23:00 | |
| 12:00 | 00:00Tomorrow | |
| 13:00 | 01:00Tomorrow | |
| 14:00 | 02:00Tomorrow | |
| 15:00 | 03:00Tomorrow | |
| 16:00 | 04:00Tomorrow | |
| 17:00 | 05:00Tomorrow | |
| 18:00 | 06:00Tomorrow | |
| 19:00 | 07:00Tomorrow | |
| 20:00 | 08:00Tomorrow | |
| 21:00 | 09:00Tomorrow | |
| 22:00 | 10:00Tomorrow | |
| 23:00 | 11:00Tomorrow |
Working hoursEarly or eveningNightWeekend
Questions
Asked about New York and Perth
What is the time difference between New York and Perth?
Perth is 12 hours ahead of New York. This holds until 1 November 2026; then Perth is 13 hours ahead of New York.
What is the best time for a call between New York and Perth?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 09:00–10:00 in New York = 21:00–22:00 in Perth · 1 h; Mon–Thu: 21:00–22:00 in New York = 09:00–10:00 in Perth (tomorrow) · 1 h.
When does the time difference between New York and Perth change?
In the next 12 months it changes on: 1 November 2026 (+13 h); 14 March 2027 (+12 h).