Today in Gunma, Japan, the sun rises at 4:33 AM and sets at 7:06 PM, giving the city exactly 14h 33m of daylight. That is 1 minutes shorter than yesterday—just past its peak, losing daylight slowly. With 167 days until the Winter Solstice on December 21, Gunma is currently in its Summer season.
Golden Hour & Twilight Windows in Gunma
For photographers, filmmakers, and outdoor enthusiasts, the morning golden hour in Gunma runs from N/A to 5:11 AM. The evening golden hour begins at 6:28 PM and lasts until 7:06 PM.
Civil twilight—when there is still sufficient ambient light to see clearly outdoors—begins at N/A. Gunma sits in the subtropics, where the annual swing in daylight is moderate.
Solar Noon & UV Index
Solar noon in Gunma falls exactly at 11:49 AM, which is the moment the sun reaches its peak altitude of -18.69 above the horizon. At this specific time, the solar angle produces a relatively low UV exposure day for Gunma, typical of its Summer season.
Why Does Sunrise Shift in Gunma?
At Gunma's latitude of 36.52198°, the sun currently rises at an azimuth of 499.05° (SE). Because of the Earth's axial tilt, this position shifts slightly every day. Sunrise and sunset times for Gunma are calculated using advanced solar algorithms (SunCalc) based on coordinates 36.52198, 139.033483. Times are mathematically accurate to ±30 seconds.
Historical Sunrise in Gunma (Past Years)
Due to the Earth's precise orbit, solar times remain highly consistent year over year. Here is a comparison of today's sunrise and sunset times in Gunma versus 1 year and 5 years ago:
| Year | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Today | 4:33 AM | 7:06 PM | 14h 33m |
| 2025 | 4:33 AM | 7:06 PM | 14h 33m |
| 2021 | 4:33 AM | 7:06 PM | 14h 33m |
Frequently Asked Questions
What time does the sun rise in Gunma today?
In Gunma, the sun rises at exactly 4:33 AM and sets at 7:06 PM today. This gives the city a total of 14h 33m of daylight.
When is golden hour in Gunma today?
Today, morning golden hour in Gunma runs from N/A to 5:11 AM. Evening golden hour begins at 6:28 PM and lasts until 7:03 PM.
Why does sunrise in Gunma shift every day?
At Gunma's latitude, the sun currently rises at an azimuth of 499.05° (SE). Because of Earth's tilt, the city is just past its peak, losing daylight slowly until the Winter Solstice on December 21.
What is the UV Index in Gunma at solar noon?
Solar noon occurs at 11:49 AM when the sun reaches -18.69. This produces a relatively low UV exposure day for Gunma, typical of its Summer season.
Has the sunrise time in Gunma changed compared to previous years?
Due to the Earth's precise orbit, solar times remain highly consistent year over year. Exactly one year ago in 2025, sunrise was at 4:33 AM, and five years ago in 2021, it was at 4:33 AM.