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 Saturday, 1 August 2026: day of Saturn
- Sunrise
- 04:48
- Sunset
- 18:45
- Next sunrise
- 04:49
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:48 – 05:58
- 2♃︎ Jupiter05:58 – 07:08
- 3♂︎ Mars07:08 – 08:18
- 4☉︎ Sun08:18 – 09:27
- 5♀︎ Venus09:27 – 10:37
- 6☿︎ Mercury10:37 – 11:47
- 7☽︎ Moon11:47 – 12:57
- 8♄︎ Saturn12:57 – 14:06
- 9♃︎ Jupiter14:06 – 15:16
- 10♂︎ Mars15:16 – 16:26
- 11☉︎ Sun16:26 – 17:36
- 12♀︎ Venus17:36 – 18:45
Night
- 1☿︎ Mercury18:45 – 19:36
- 2☽︎ Moon19:36 – 20:26
- 3♄︎ Saturn20:26 – 21:16
- 4♃︎ Jupiter21:16 – 22:07
- 5♂︎ Mars22:07 – 22:57
- 6☉︎ Sun22:57 – 23:47
- 7♀︎ Venus23:47 – 00:38
- 8☿︎ Mercury00:38 – 01:28
- 9☽︎ Moon01:28 – 02:18
- 10♄︎ Saturn02:18 – 03:09
- 11♃︎ Jupiter03:09 – 03:59
- 12♂︎ Mars03:59 – 04:49
Questions
How are the planetary hours calculated in Tokyo?
On Saturday, 1 August 2026, the Sun rises at 04:48 and sets at 18:45: the day lasts 13h 57m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:49, lasts 10h 04m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Saturn, from 04:48 to 05:58: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.