Sydney is 15 hours ahead of Philadelphia. Philadelphia is UTC-4. Sydney is UTC+11.
Philadelphia on 15 October 2026: sunrise 07:11, sunset 18:21, day length 11 h 10 min.
Sydney on 15 October 2026: sunrise 06:14, sunset 19:08, day length 12 h 54 min.
For Philadelphia and Sydney: The next clock change in Philadelphia is 1 hour back on 1 November 2026 at 02:00, from UTC-4 to UTC-5.
For Sydney and Philadelphia: The next clock change in Sydney is 1 hour back on 4 April 2027 at 03:00, from UTC+11 to UTC+10.
| Change |
|---|
| The gap changes on 1 November 2026 at 02:00, when clocks in Philadelphia move back 1 hour. |
| The gap changes on 14 March 2027 at 02:00, when clocks in Philadelphia 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 Philadelphia move back 1 hour. |
| View | 09:00 to 17:00 |
|---|---|
| From Philadelphia | Philadelphia and Sydney have no hour that is 09:00 to 17:00 in both cities. |
| From Sydney | Sydney and Philadelphia have no hour that is 09:00 to 17:00 in both cities. |
| Philadelphia | Sydney |
|---|---|
| 00:00 | 15:00 |
| 01:00 | 16:00 |
| 02:00 | 17:00 |
| 03:00 | 18:00 |
| 04:00 | 19:00 |
| 05:00 | 20:00 |
| 06:00 | 21:00 |
| 07:00 | 22:00 |
| 08:00 | 23:00 |
| 09:00 | 00:00 (next day) |
| 10:00 | 01:00 (next day) |
| 11:00 | 02:00 (next day) |
| 12:00 | 03:00 (next day) |
| 13:00 | 04:00 (next day) |
| 14:00 | 05:00 (next day) |
| 15:00 | 06:00 (next day) |
| 16:00 | 07:00 (next day) |
| 17:00 | 08:00 (next day) |
| 18:00 | 09:00 (next day) |
| 19:00 | 10:00 (next day) |
| 20:00 | 11:00 (next day) |
| 21:00 | 12:00 (next day) |
| 22:00 | 13:00 (next day) |
| 23:00 | 14:00 (next day) |
| City | Longest day | Shortest day |
|---|---|---|
| Philadelphia with Sydney | 21 June 2026, 15 h 1 min | 21 December 2026, 9 h 20 min |
| Sydney with Philadelphia | 22 December 2026, 14 h 25 min | 21 June 2026, 9 h 54 min |
| City | Date | Holiday |
|---|---|---|
| Philadelphia and Sydney | 11 November 2026 | Veterans Day |
| Philadelphia and Sydney | 26 November 2026 | Thanksgiving Day |
| Sydney and Philadelphia | 25 December 2026 | Christmas Day |
| Sydney and Philadelphia | 26 December 2026 | Boxing Day |