Naperville time: CST and CDT
The next clock change in Naperville is 1 hour back on 1 November 2026 at 02:00, from UTC-5 to UTC-6.
Naperville on 15 October 2026: sunrise 07:04, sunset 18:11, day length 11 h 6 min.
Place| Fact | Value |
|---|
| Time zone | America/Chicago |
| Offset | UTC-5 |
| Region | Illinois |
| Latitude | 41.7859 |
| Longitude | -88.1473 |
| Population | 147,100 |
The next clock change in Naperville is 1 hour back on 1 November 2026 at 02:00, from UTC-5 to UTC-6.
Sun this year| Fact | Value |
|---|
| Longest day | 21 June 2026, 15 h 13 min |
| Shortest day | 21 December 2026, 9 h 8 min |
| Earliest sunrise | 05:17 on 14 June 2026 |
| Latest sunset | 20:31 on 27 June 2026 |
| Golden hour on the longest day | 21 June morning 05:17 to 06:00, evening 19:48 to 20:31 |
Next public holidays| Date | Holiday |
|---|
| 11 November 2026 | Veterans Day |
| 26 November 2026 | Thanksgiving Day |
| 25 December 2026 | Christmas Day |
Working hours overlap| City | 09:00 to 17:00 |
|---|
| London | Naperville 09:00 to 11:00; London 15:00 to 17:00 |
| New York | Naperville 09:00 to 16:00; New York 10:00 to 17:00 |