Question 1

How many hours of daylight does Osaka get today?

Accepted Answer

Osaka currently gets approximately 12 hours and 39 minutes of daylight today. This varies throughout the year — days are longest around the summer solstice (June in the Northern Hemisphere, December in the Southern Hemisphere) and shortest around the winter solstice. At 34.7° latitude, Osaka sees moderate variation, with summer days noticeably longer than winter days. Our calculations use the SunCalc astronomical library for accuracy within 1–2 minutes.

Question 2

What time does the sun rise in Osaka?

Accepted Answer

Sunrise times in Osaka change throughout the year based on the Earth's axial tilt and the city's position at 34.7° latitude. Use the table above to see today's exact sunrise time, as well as dawn (civil twilight) and other twilight phases. The earliest sunrise typically occurs around the summer solstice, while the latest sunrise happens near the winter solstice. The difference between earliest and latest sunrise can be over two hours. All sunrise calculations are based on NOAA solar position algorithms via the SunCalc library.

Question 3

What time does the sun set in Osaka?

Accepted Answer

Sunset times in Osaka vary by season due to the Earth's orbital mechanics and the city's latitude of 34.7°. Check the table above for today's exact sunset time, including dusk and twilight phases. The latest sunset typically occurs a few days after the summer solstice, while the earliest sunset happens a few days before the winter solstice. At mid-latitudes, you can expect sunset to vary by 2–3 hours across the seasons.

Question 4

How does day length change throughout the year in Osaka?

Accepted Answer

Osaka at 34.7° latitude experiences moderate seasonal day length variation. Summer days are noticeably longer than winter days, with daylight typically ranging from about 8 to 16 hours depending on the time of year. The rate of change is fastest around the equinoxes (March and September), when day length changes by several minutes each day. Around the solstices, the rate of change slows as day length approaches its maximum or minimum. This makes spring and autumn the seasons with the most noticeable daily changes in sunrise and sunset times.

Question 5

What is civil twilight in Osaka?

Accepted Answer

Civil twilight in Osaka is the period when the sun is between 0° and 6° below the horizon. During civil twilight, there is enough natural light for most outdoor activities without artificial lighting. It occurs just before sunrise (dawn) and just after sunset (dusk). At mid-latitudes, civil twilight typically lasts about 25–35 minutes. The exact duration for Osaka is shown in the twilight data table above.

Question 6

What are the different twilight phases?

Accepted Answer

There are three twilight phases, each defined by the sun's angle below the horizon. Civil twilight (0°–6°) is the brightest phase, with enough light for outdoor activities without artificial lighting. Nautical twilight (6°–12°) is dimmer but still allows sailors to see the horizon for celestial navigation. Astronomical twilight (12°–18°) is nearly dark, with only the faintest glow on the horizon, and most stars become visible. Below 18° is considered full astronomical night. The duration of each phase varies by latitude and season — our data table above shows all twilight phases for Osaka.

Question 7

When is the longest day in Osaka?

Accepted Answer

The longest day in Osaka occurs around the summer solstice. For Osaka in the Northern Hemisphere, the longest day is around June 20–21. On this date, Osaka experiences its earliest sunrise and near-latest sunset of the year. At 34.7° latitude, the longest day is typically 14–16 hours of daylight. The shortest day (winter solstice) occurs approximately six months later.

Question 8

Does daylight saving time affect sunrise and sunset times in Osaka?

Accepted Answer

Osaka does not observe daylight saving time, so sunrise and sunset times change only due to natural seasonal variation throughout the year. The gradual shift in sunrise and sunset times follows a smooth curve driven by the Earth's axial tilt and orbital position. This makes it easier to predict sunrise and sunset patterns in Osaka compared to cities that observe DST, where clock changes create abrupt jumps in the schedule.

Astronomical Dawn	4:16:48 AM
Nautical Dawn	4:47:29 AM
Civil Dawn	5:17:28 AM
Sunrise	5:42:56 AM
Golden Hour End	6:16:18 AM
Solar Noon	12:02:16 PM
Golden Hour Start	5:48:14 PM
Sunset	6:21:37 PM
Civil Dusk	6:47:05 PM
Nautical Dusk	7:17:04 PM
Astronomical Dusk	7:47:44 PM
Day Length	12h 39m

Moonrise	8:43:29 PM
Moonset	7:02:06 AM
Moon Phase	🌖 Waning Gibbous
Illumination	95%

Date	Sunrise	Sunset	Day Length	Moonrise	Moonset	Phase
Apr 1, Wed	5:47 AM	6:19 PM	12h 32m	5:44 PM	5:38 AM	🌕
Apr 2, Thu	5:45 AM	6:20 PM	12h 34m	6:44 PM	6:04 AM	🌕
Apr 3, Fri	5:44 AM	6:20 PM	12h 37m	7:43 PM	6:30 AM	🌕
Apr 4, Sat	5:42 AM	6:21 PM	12h 39m	8:43 PM	7:02 AM	🌖
Apr 5, Sun	5:41 AM	6:22 PM	12h 41m	9:42 PM	7:36 AM	🌖
Apr 6, Mon	5:40 AM	6:23 PM	12h 43m	10:41 PM	8:17 AM	🌖
Apr 7, Tue	5:38 AM	6:23 PM	12h 45m	11:36 PM	—	🌖
Apr 8, Wed	5:37 AM	6:24 PM	12h 47m	12:27 AM	9:05 AM	🌗
Apr 9, Thu	5:36 AM	6:25 PM	12h 49m	1:12 AM	9:59 AM	🌗
Apr 10, Fri	5:34 AM	6:26 PM	12h 51m	1:51 AM	10:57 AM	🌗
Apr 11, Sat	5:33 AM	6:27 PM	12h 54m	2:26 AM	11:59 AM	🌗
Apr 12, Sun	5:32 AM	6:27 PM	12h 56m	2:57 AM	1:01 PM	🌘
Apr 13, Mon	5:30 AM	6:28 PM	12h 58m	3:26 AM	2:04 PM	🌘
Apr 14, Tue	5:29 AM	6:29 PM	13h 0m	3:52 AM	3:07 PM	🌘
Apr 15, Wed	5:28 AM	6:30 PM	13h 2m	4:20 AM	4:11 PM	🌘
Apr 16, Thu	5:27 AM	6:31 PM	13h 4m	4:49 AM	5:17 PM	🌑
Apr 17, Fri	5:25 AM	6:31 PM	13h 6m	5:21 AM	6:26 PM	🌑
Apr 18, Sat	5:24 AM	6:32 PM	13h 8m	5:58 AM	7:38 PM	🌑
Apr 19, Sun	5:23 AM	6:33 PM	13h 10m	6:44 AM	8:52 PM	🌑
Apr 20, Mon	5:22 AM	6:34 PM	13h 12m	7:38 AM	10:05 PM	🌒
Apr 21, Tue	5:20 AM	6:35 PM	13h 14m	8:41 AM	11:13 PM	🌒
Apr 22, Wed	5:19 AM	6:35 PM	13h 16m	—	12:14 AM	🌒
Apr 23, Thu	5:18 AM	6:36 PM	13h 18m	9:51 AM	1:04 AM	🌓
Apr 24, Fri	5:17 AM	6:37 PM	13h 20m	11:04 AM	1:45 AM	🌓
Apr 25, Sat	5:16 AM	6:38 PM	13h 22m	12:16 PM	2:19 AM	🌓
Apr 26, Sun	5:15 AM	6:39 PM	13h 24m	1:25 PM	2:49 AM	🌔
Apr 27, Mon	5:13 AM	6:39 PM	13h 26m	2:30 PM	3:15 AM	🌔
Apr 28, Tue	5:12 AM	6:40 PM	13h 28m	3:32 PM	3:41 AM	🌔
Apr 29, Wed	5:11 AM	6:41 PM	13h 30m	4:33 PM	4:06 AM	🌔
Apr 30, Thu	5:10 AM	6:42 PM	13h 32m	5:33 PM	4:32 AM	🌕

Sunrise & Sunset in Osaka, Japan

Sun Times

Moon

Monthly Summary — April 2026

Twilight Phases in Osaka

Holidays in Japan

Explore Osaka

Frequently Asked Questions about Sunrise & Sunset in Osaka

Sunrise & Sunset in Other Cities