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 Tuesday, 21 April 2026: day of Mars
- Sunrise
- 05:01
- Sunset
- 18:19
- Next sunrise
- 05:00
A day hour lasts 1h 06m; a night hour, 53 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars05:01 – 06:07
- 2☉︎ Sun06:07 – 07:14
- 3♀︎ Venus07:14 – 08:20
- 4☿︎ Mercury08:20 – 09:27
- 5☽︎ Moon09:27 – 10:33
- 6♄︎ Saturn10:33 – 11:40
- 7♃︎ Jupiter11:40 – 12:46
- 8♂︎ Mars12:46 – 13:53
- 9☉︎ Sun13:53 – 14:59
- 10♀︎ Venus14:59 – 16:06
- 11☿︎ Mercury16:06 – 17:12
- 12☽︎ Moon17:12 – 18:19
Night
- 1♄︎ Saturn18:19 – 19:12
- 2♃︎ Jupiter19:12 – 20:05
- 3♂︎ Mars20:05 – 20:59
- 4☉︎ Sun20:59 – 21:52
- 5♀︎ Venus21:52 – 22:46
- 6☿︎ Mercury22:46 – 23:39
- 7☽︎ Moon23:39 – 00:33
- 8♄︎ Saturn00:33 – 01:26
- 9♃︎ Jupiter01:26 – 02:19
- 10♂︎ Mars02:19 – 03:13
- 11☉︎ Sun03:13 – 04:06
- 12♀︎ Venus04:06 – 05:00
Questions
How are the planetary hours calculated in Tokyo?
On Tuesday, 21 April 2026, the Sun rises at 05:01 and sets at 18:19: the day lasts 13h 18m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:00, lasts 10h 41m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Mars, from 05:01 to 06:07: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.