Planetary hours
in Osaka.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Sunday, 17 May 2026: day of the Sun
- Sunrise
- 04:54
- Sunset
- 18:55
- Next sunrise
- 04:53
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:54 – 06:04
- 2♀︎ Venus06:04 – 07:14
- 3☿︎ Mercury07:14 – 08:24
- 4☽︎ Moon08:24 – 09:34
- 5♄︎ Saturn09:34 – 10:44
- 6♃︎ Jupiter10:44 – 11:54
- 7♂︎ Mars11:54 – 13:04
- 8☉︎ Sun13:04 – 14:14
- 9♀︎ Venus14:14 – 15:24
- 10☿︎ Mercury15:24 – 16:35
- 11☽︎ Moon16:35 – 17:45
- 12♄︎ Saturn17:45 – 18:55
Night
- 1♃︎ Jupiter18:55 – 19:45
- 2♂︎ Mars19:45 – 20:34
- 3☉︎ Sun20:34 – 21:24
- 4♀︎ Venus21:24 – 22:14
- 5☿︎ Mercury22:14 – 23:04
- 6☽︎ Moon23:04 – 23:54
- 7♄︎ Saturn23:54 – 00:44
- 8♃︎ Jupiter00:44 – 01:33
- 9♂︎ Mars01:33 – 02:23
- 10☉︎ Sun02:23 – 03:13
- 11♀︎ Venus03:13 – 04:03
- 12☿︎ Mercury04:03 – 04:53
Questions
How are the planetary hours calculated in Osaka?
On Sunday, 17 May 2026, the Sun rises at 04:54 and sets at 18:55: the day lasts 14h 01m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:53, lasts 9h 58m: twelve night hours of 50 min.
Which planet rules the first hour that day?
The Sun, from 04:54 to 06:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.