| Sunrise | Sunset | Daylight | |
|---|---|---|---|
| Today | 05:25 | 18:33 | 13h 08m |
| Tomorrow | 05:24 | 18:34 | 13h 10m |
| Change | −1m | +1m | +2m |
Positive change in sunset / daylight = days are getting longer. Negative change in sunrise = sun is rising earlier.
Today's light segments for Arima Onsen. Amber = daylight, violet = twilight, dark = night.
Sunrise and sunset on the 1st of each month in Arima Onsen.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 07:07 | 16:59 | 9h 52m |
| February | 06:59 | 17:28 | 10h 29m |
| March | 06:30 | 17:55 | 11h 25m |
| April | 05:48 | 18:20 | 12h 32m |
| May | 05:10 | 18:44 | 13h 34m |
| June | 04:48 | 19:07 | 14h 19m |
| July | 04:50 | 19:17 | 14h 27m |
| August | 05:09 | 19:03 | 13h 54m |
| September | 05:32 | 18:28 | 12h 56m |
| October | 05:54 | 17:45 | 11h 51m |
| November | 06:20 | 17:07 | 10h 47m |
| December | 06:49 | 16:49 | 10h 00m |
Arima Onsen is located at 34.80°N, 135.25°E. Its latitude determines how dramatically daylight hours change through the year.
The city uses the Asia/Tokyo 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 Arima Onsen this falls around 11:58 in mid-summer and 11:49 in December, reflecting UTC offset and any DST adjustments.