Planetary hours
in Tokyo.
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, 10 August 2025: day of the Sun
- Sunrise
- 04:56
- Sunset
- 18:36
- Next sunrise
- 04:56
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:56 – 06:04
- 2♀︎ Venus06:04 – 07:12
- 3☿︎ Mercury07:12 – 08:21
- 4☽︎ Moon08:21 – 09:29
- 5♄︎ Saturn09:29 – 10:37
- 6♃︎ Jupiter10:37 – 11:46
- 7♂︎ Mars11:46 – 12:54
- 8☉︎ Sun12:54 – 14:03
- 9♀︎ Venus14:03 – 15:11
- 10☿︎ Mercury15:11 – 16:19
- 11☽︎ Moon16:19 – 17:28
- 12♄︎ Saturn17:28 – 18:36
Night
- 1♃︎ Jupiter18:36 – 19:28
- 2♂︎ Mars19:28 – 20:20
- 3☉︎ Sun20:20 – 21:11
- 4♀︎ Venus21:11 – 22:03
- 5☿︎ Mercury22:03 – 22:55
- 6☽︎ Moon22:55 – 23:46
- 7♄︎ Saturn23:46 – 00:38
- 8♃︎ Jupiter00:38 – 01:30
- 9♂︎ Mars01:30 – 02:21
- 10☉︎ Sun02:21 – 03:13
- 11♀︎ Venus03:13 – 04:05
- 12☿︎ Mercury04:05 – 04:56
Questions
How are the planetary hours calculated in Tokyo?
On Sunday, 10 August 2025, the Sun rises at 04:56 and sets at 18:36: the day lasts 13h 41m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:56, lasts 10h 20m: twelve night hours of 52 min.
Which planet rules the first hour that day?
The Sun, from 04:56 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.