Today in Nagaoka, Japan, the sun rises at 5:07 AM and sets at 6:30 PM, giving the city exactly 13h 23m of daylight. That is 2 minutes shorter than yesterday—just past its peak, losing daylight slowly. With 121 days until the Winter Solstice on December 21, Nagaoka is currently in its Summer season.
Golden Hour & Twilight Windows in Nagaoka
For photographers, filmmakers, and outdoor enthusiasts, the morning golden hour in Nagaoka runs from N/A to 5:42 AM. The evening golden hour begins at 5:55 PM and lasts until 6:30 PM.
Civil twilight—when there is still sufficient ambient light to see clearly outdoors—begins at N/A. Nagaoka sits in the subtropics, where the annual swing in daylight is moderate.
Solar Noon & UV Index
Solar noon in Nagaoka falls exactly at 11:49 AM, which is the moment the sun reaches its peak altitude of -26.94 above the horizon. At this specific time, the solar angle produces a relatively low UV exposure day for Nagaoka, typical of its Summer season.
Why Does Sunrise Shift in Nagaoka?
At Nagaoka's latitude of 37.446996°, the sun currently rises at an azimuth of 132.76° (SE). Because of the Earth's axial tilt, this position shifts slightly every day. Sunrise and sunset times for Nagaoka are calculated using advanced solar algorithms (SunCalc) based on coordinates 37.446996, 138.8512199. Times are mathematically accurate to ±30 seconds.
Historical Sunrise in Nagaoka (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 Nagaoka versus 1 year and 5 years ago:
| Year | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Today | 5:07 AM | 6:30 PM | 13h 23m |
| 2025 | 5:07 AM | 6:30 PM | 13h 22m |
| 2021 | 5:07 AM | 6:30 PM | 13h 22m |
Frequently Asked Questions
What time does the sun rise in Nagaoka today?
In Nagaoka, the sun rises at exactly 5:07 AM and sets at 6:30 PM today. This gives the city a total of 13h 23m of daylight.
When is golden hour in Nagaoka today?
Today, morning golden hour in Nagaoka runs from N/A to 5:42 AM. Evening golden hour begins at 5:55 PM and lasts until 6:28 PM.
Why does sunrise in Nagaoka shift every day?
At Nagaoka's latitude, the sun currently rises at an azimuth of 132.76° (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 Nagaoka at solar noon?
Solar noon occurs at 11:49 AM when the sun reaches -26.94. This produces a relatively low UV exposure day for Nagaoka, typical of its Summer season.
Has the sunrise time in Nagaoka 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 5:07 AM, and five years ago in 2021, it was at 5:07 AM.