| Sunrise | Sunset | Daylight | |
|---|---|---|---|
| Today | 05:48 | 19:15 | 13h 27m |
| Tomorrow | 05:46 | 19:16 | 13h 30m |
| Change | −2m | +1m | +3m |
Positive change in sunset / daylight = days are getting longer. Negative change in sunrise = sun is rising earlier.
Today's light segments for Ansan. Amber = daylight, violet = twilight, dark = night.
Sunrise and sunset on the 1st of each month in Ansan.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 07:48 | 17:26 | 9h 38m |
| February | 07:37 | 17:57 | 10h 20m |
| March | 07:06 | 18:26 | 11h 20m |
| April | 06:20 | 18:55 | 12h 35m |
| May | 05:39 | 19:22 | 13h 43m |
| June | 05:15 | 19:48 | 14h 33m |
| July | 05:16 | 19:58 | 14h 42m |
| August | 05:37 | 19:42 | 14h 05m |
| September | 06:04 | 19:04 | 13h 00m |
| October | 06:28 | 18:18 | 11h 50m |
| November | 06:57 | 17:37 | 10h 40m |
| December | 07:28 | 17:17 | 9h 49m |
Ansan is located at 37.32°N, 126.83°E. Its latitude determines how dramatically daylight hours change through the year.
The city uses the Asia/Seoul timezone (GMT+9). It does not observe Daylight Saving Time, so solar times shift gradually through the year without abrupt clock changes.
Solar noon — the moment the sun reaches its highest point in the sky — occurs when the sun crosses the local meridian. In Ansan this falls around 12:31 in mid-summer and 12:22 in December, reflecting UTC offset and any DST adjustments.