Sunrise and Sunset times in Koyama, Japan 
Koyama
Nagano
Time zone: Asia/Tokyo, UTC 9 h.
Latitude: 36.6446, Longitude: 138.318
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 04:31:47 | 11:50:36 | 19:09:25 | 14h 37m 38s |
| 2025-Jul-02, Wednesday | 04:32:15 | 11:50:47 | 19:09:20 | 14h 37m 5s |
| 2025-Jul-03, Thursday | 04:32:44 | 11:50:59 | 19:09:14 | 14h 36m 30s |
| 2025-Jul-04, Friday | 04:33:14 | 11:51:09 | 19:09:05 | 14h 35m 51s |
| 2025-Jul-05, Saturday | 04:33:45 | 11:51:20 | 19:08:55 | 14h 35m 10s |
| 2025-Jul-06, Sunday | 04:34:17 | 11:51:30 | 19:08:43 | 14h 34m 26s |
| 2025-Jul-07, Monday | 04:34:50 | 11:51:40 | 19:08:30 | 14h 33m 40s |
| 2025-Jul-08, Tuesday | 04:35:25 | 11:51:49 | 19:08:14 | 14h 32m 49s |
| 2025-Jul-09, Wednesday | 04:36:00 | 11:51:58 | 19:07:57 | 14h 31m 57s |
| 2025-Jul-10, Thursday | 04:36:36 | 11:52:07 | 19:07:38 | 14h 31m 2s |
| 2025-Jul-11, Friday | 04:37:13 | 11:52:15 | 19:07:17 | 14h 30m 4s |
| 2025-Jul-12, Saturday | 04:37:51 | 11:52:23 | 19:06:55 | 14h 29m 4s |
| 2025-Jul-13, Sunday | 04:38:30 | 11:52:30 | 19:06:30 | 14h 28m 0s |
| 2025-Jul-14, Monday | 04:39:10 | 11:52:37 | 19:06:04 | 14h 26m 54s |
| 2025-Jul-15, Tuesday | 04:39:50 | 11:52:43 | 19:05:36 | 14h 25m 46s |
| 2025-Jul-16, Wednesday | 04:40:32 | 11:52:49 | 19:05:07 | 14h 24m 35s |
| 2025-Jul-17, Thursday | 04:41:13 | 11:52:54 | 19:04:35 | 14h 23m 22s |
| 2025-Jul-18, Friday | 04:41:56 | 11:52:59 | 19:04:02 | 14h 22m 6s |
| 2025-Jul-19, Saturday | 04:42:39 | 11:53:03 | 19:03:28 | 14h 20m 49s |
| 2025-Jul-20, Sunday | 04:43:23 | 11:53:07 | 19:02:51 | 14h 19m 28s |
| 2025-Jul-21, Monday | 04:44:07 | 11:53:10 | 19:02:13 | 14h 18m 6s |
| 2025-Jul-22, Tuesday | 04:44:52 | 11:53:13 | 19:01:34 | 14h 16m 42s |
| 2025-Jul-23, Wednesday | 04:45:37 | 11:53:15 | 19:00:52 | 14h 15m 15s |
| 2025-Jul-24, Thursday | 04:46:23 | 11:53:16 | 19:00:09 | 14h 13m 46s |
| 2025-Jul-25, Friday | 04:47:09 | 11:53:17 | 18:59:25 | 14h 12m 16s |
| 2025-Jul-26, Saturday | 04:47:55 | 11:53:17 | 18:58:39 | 14h 10m 44s |
| 2025-Jul-27, Sunday | 04:48:42 | 11:53:17 | 18:57:51 | 14h 9m 9s |
| 2025-Jul-28, Monday | 04:49:29 | 11:53:16 | 18:57:02 | 14h 7m 33s |
| 2025-Jul-29, Tuesday | 04:50:16 | 11:53:14 | 18:56:11 | 14h 5m 55s |
| 2025-Jul-30, Wednesday | 04:51:04 | 11:53:12 | 18:55:19 | 14h 4m 15s |
| 2025-Jul-31, Thursday | 04:51:52 | 11:53:09 | 18:54:26 | 14h 2m 34s |
Koyama on Japan map:
Cities in the same time zone Asia/Tokyo
Tokyo (Tōkyō), Osaka (Ōsaka), Yokohama (Kanagawa), Nagoya (Aichi), Fukuoka (Fukuoka), Sapporo (Hokkaidō), Sendai (Miyagi), Hiroshima (Hiroshima), Kyoto (Kyōto), Kobe (Hyōgo), Kawanakajima (Kanagawa), Kitaku (Fukuoka), Hamamatsu (Shizuoka), Naha (Okinawa), Okayama (Okayama), Kumamoto (Kumamoto), Shizuoka (Shizuoka), Utsunomiya (Tochigi), Nagano (Nagano), Hachioji (Tōkyō), Niigata (Niigata), Kagoshima (Kagoshima), Kanazawa (Ishikawa), Otsu (Shiga), Matsuyama (Ehime), Tsu (Mie), Oita (Ōita), Tokushima (Tokushima), Wakayama (Wakayama), Nagasaki (Nagasaki)
Largest Populated Areas in Japan
Tokyo (Tōkyō), Osaka (Ōsaka), Yokohama (Kanagawa), Nagoya (Aichi), Fukuoka (Fukuoka), Sapporo (Hokkaidō), Sendai (Miyagi), Hiroshima (Hiroshima), Kyoto (Kyōto), Kobe (Hyōgo), Kawanakajima (Kanagawa), Kitaku (Fukuoka), Hamamatsu (Shizuoka), Naha (Okinawa), Okayama (Okayama), Kumamoto (Kumamoto), Shizuoka (Shizuoka), Utsunomiya (Tochigi), Nagano (Nagano), Hachioji (Tōkyō), Niigata (Niigata), Kagoshima (Kagoshima), Kanazawa (Ishikawa), Otsu (Shiga), Matsuyama (Ehime), Tsu (Mie), Oita (Ōita), Tokushima (Tokushima), Wakayama (Wakayama), Nagasaki (Nagasaki)
Daylight Hours FAQ: 10 Most Googled Questions Answered
1. What are daylight hours?
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
2. Why are days shorter in winter and longer in summer?
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
3. When is the longest day of the year?
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
4. When is the shortest day of the year?
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
5. How does latitude affect daylight hours?
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
6. Why do New York and Miami have different day lengths?
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
7. When are day and night equal?
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
How fast do days lengthen/shorten?
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
9. Where can I check daylight hours for my city?
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
10. Does daylight affect health?
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks