Sunrise and Sunset times in Koizumi, Japan 
Koizumi
Saitama
Time zone: Asia/Tokyo, UTC 9 h.
Latitude: 35.9739, Longitude: 139.566
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 04:28:42 | 11:45:36 | 19:02:31 | 14h 33m 49s |
| 2025-Jul-02, Wednesday | 04:29:09 | 11:45:48 | 19:02:27 | 14h 33m 18s |
| 2025-Jul-03, Thursday | 04:29:38 | 11:45:59 | 19:02:20 | 14h 32m 42s |
| 2025-Jul-04, Friday | 04:30:07 | 11:46:10 | 19:02:13 | 14h 32m 6s |
| 2025-Jul-05, Saturday | 04:30:38 | 11:46:20 | 19:02:03 | 14h 31m 25s |
| 2025-Jul-06, Sunday | 04:31:09 | 11:46:31 | 19:01:52 | 14h 30m 43s |
| 2025-Jul-07, Monday | 04:31:42 | 11:46:40 | 19:01:39 | 14h 29m 57s |
| 2025-Jul-08, Tuesday | 04:32:16 | 11:46:50 | 19:01:24 | 14h 29m 8s |
| 2025-Jul-09, Wednesday | 04:32:50 | 11:46:59 | 19:01:07 | 14h 28m 17s |
| 2025-Jul-10, Thursday | 04:33:26 | 11:47:08 | 19:00:49 | 14h 27m 23s |
| 2025-Jul-11, Friday | 04:34:02 | 11:47:16 | 19:00:29 | 14h 26m 27s |
| 2025-Jul-12, Saturday | 04:34:40 | 11:47:23 | 19:00:07 | 14h 25m 27s |
| 2025-Jul-13, Sunday | 04:35:18 | 11:47:31 | 18:59:44 | 14h 24m 26s |
| 2025-Jul-14, Monday | 04:35:56 | 11:47:38 | 18:59:19 | 14h 23m 23s |
| 2025-Jul-15, Tuesday | 04:36:36 | 11:47:44 | 18:58:52 | 14h 22m 16s |
| 2025-Jul-16, Wednesday | 04:37:16 | 11:47:50 | 18:58:23 | 14h 21m 7s |
| 2025-Jul-17, Thursday | 04:37:57 | 11:47:55 | 18:57:53 | 14h 19m 56s |
| 2025-Jul-18, Friday | 04:38:38 | 11:48:00 | 18:57:21 | 14h 18m 43s |
| 2025-Jul-19, Saturday | 04:39:21 | 11:48:04 | 18:56:47 | 14h 17m 26s |
| 2025-Jul-20, Sunday | 04:40:03 | 11:48:08 | 18:56:12 | 14h 16m 9s |
| 2025-Jul-21, Monday | 04:40:46 | 11:48:11 | 18:55:35 | 14h 14m 49s |
| 2025-Jul-22, Tuesday | 04:41:30 | 11:48:13 | 18:54:56 | 14h 13m 26s |
| 2025-Jul-23, Wednesday | 04:42:14 | 11:48:15 | 18:54:16 | 14h 12m 2s |
| 2025-Jul-24, Thursday | 04:42:58 | 11:48:16 | 18:53:34 | 14h 10m 36s |
| 2025-Jul-25, Friday | 04:43:43 | 11:48:17 | 18:52:51 | 14h 9m 8s |
| 2025-Jul-26, Saturday | 04:44:29 | 11:48:17 | 18:52:06 | 14h 7m 37s |
| 2025-Jul-27, Sunday | 04:45:14 | 11:48:17 | 18:51:20 | 14h 6m 6s |
| 2025-Jul-28, Monday | 04:46:00 | 11:48:16 | 18:50:32 | 14h 4m 32s |
| 2025-Jul-29, Tuesday | 04:46:46 | 11:48:14 | 18:49:43 | 14h 2m 57s |
| 2025-Jul-30, Wednesday | 04:47:33 | 11:48:12 | 18:48:52 | 14h 1m 19s |
| 2025-Jul-31, Thursday | 04:48:19 | 11:48:09 | 18:47:59 | 13h 59m 40s |
Koizumi 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