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 Friday, 31 July 2026: day of Venus
- Sunrise
- 04:48
- Sunset
- 18:46
- Next sunrise
- 04:48
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus04:48 – 05:57
- 2☿︎ Mercury05:57 – 07:07
- 3☽︎ Moon07:07 – 08:17
- 4♄︎ Saturn08:17 – 09:27
- 5♃︎ Jupiter09:27 – 10:37
- 6♂︎ Mars10:37 – 11:47
- 7☉︎ Sun11:47 – 12:57
- 8♀︎ Venus12:57 – 14:07
- 9☿︎ Mercury14:07 – 15:17
- 10☽︎ Moon15:17 – 16:27
- 11♄︎ Saturn16:27 – 17:36
- 12♃︎ Jupiter17:36 – 18:46
Night
- 1♂︎ Mars18:46 – 19:36
- 2☉︎ Sun19:36 – 20:27
- 3♀︎ Venus20:27 – 21:17
- 4☿︎ Mercury21:17 – 22:07
- 5☽︎ Moon22:07 – 22:57
- 6♄︎ Saturn22:57 – 23:47
- 7♃︎ Jupiter23:47 – 00:37
- 8♂︎ Mars00:37 – 01:28
- 9☉︎ Sun01:28 – 02:18
- 10♀︎ Venus02:18 – 03:08
- 11☿︎ Mercury03:08 – 03:58
- 12☽︎ Moon03:58 – 04:48
Questions
How are the planetary hours calculated in Tokyo?
On Friday, 31 July 2026, the Sun rises at 04:48 and sets at 18:46: the day lasts 13h 59m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:48, lasts 10h 02m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Venus, from 04:48 to 05:57: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.