Sydney is 16 hours ahead of St. Louis. St. Louis is UTC-5. Sydney is UTC+11.
St. Louis on 15 October 2026: sunrise 07:10, sunset 18:22, day length 11 h 12 min.
Sydney on 15 October 2026: sunrise 06:14, sunset 19:08, day length 12 h 54 min.
For St. Louis and Sydney: The next clock change in St. Louis is 1 hour back on 1 November 2026 at 02:00, from UTC-5 to UTC-6.
For Sydney and St. Louis: 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 St. Louis move back 1 hour. |
| The gap changes on 14 March 2027 at 02:00, when clocks in St. Louis 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 St. Louis move back 1 hour. |
| View | 09:00 to 17:00 |
|---|---|
| From St. Louis | St. Louis and Sydney have no hour that is 09:00 to 17:00 in both cities. |
| From Sydney | Sydney and St. Louis have no hour that is 09:00 to 17:00 in both cities. |
| St. Louis | Sydney |
|---|---|
| 00:00 | 16:00 |
| 01:00 | 17:00 |
| 02:00 | 18:00 |
| 03:00 | 19:00 |
| 04:00 | 20:00 |
| 05:00 | 21:00 |
| 06:00 | 22:00 |
| 07:00 | 23:00 |
| 08:00 | 00:00 (next day) |
| 09:00 | 01:00 (next day) |
| 10:00 | 02:00 (next day) |
| 11:00 | 03:00 (next day) |
| 12:00 | 04:00 (next day) |
| 13:00 | 05:00 (next day) |
| 14:00 | 06:00 (next day) |
| 15:00 | 07:00 (next day) |
| 16:00 | 08:00 (next day) |
| 17:00 | 09:00 (next day) |
| 18:00 | 10:00 (next day) |
| 19:00 | 11:00 (next day) |
| 20:00 | 12:00 (next day) |
| 21:00 | 13:00 (next day) |
| 22:00 | 14:00 (next day) |
| 23:00 | 15:00 (next day) |
| City | Longest day | Shortest day |
|---|---|---|
| St. Louis with Sydney | 21 June 2026, 14 h 52 min | 21 December 2026, 9 h 28 min |
| Sydney with St. Louis | 22 December 2026, 14 h 25 min | 21 June 2026, 9 h 54 min |
| City | Date | Holiday |
|---|---|---|
| St. Louis and Sydney | 11 November 2026 | Veterans Day |
| St. Louis and Sydney | 26 November 2026 | Thanksgiving Day |
| Sydney and St. Louis | 25 December 2026 | Christmas Day |
| Sydney and St. Louis | 26 December 2026 | Boxing Day |