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 Thursday, 7 August 2025: day of Jupiter
- Sunrise
- 04:53
- Sunset
- 18:39
- Next sunrise
- 04:54
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter04:53 – 06:02
- 2♂︎ Mars06:02 – 07:11
- 3☉︎ Sun07:11 – 08:20
- 4♀︎ Venus08:20 – 09:29
- 5☿︎ Mercury09:29 – 10:37
- 6☽︎ Moon10:37 – 11:46
- 7♄︎ Saturn11:46 – 12:55
- 8♃︎ Jupiter12:55 – 14:04
- 9♂︎ Mars14:04 – 15:13
- 10☉︎ Sun15:13 – 16:22
- 11♀︎ Venus16:22 – 17:31
- 12☿︎ Mercury17:31 – 18:39
Night
- 1☽︎ Moon18:39 – 19:31
- 2♄︎ Saturn19:31 – 20:22
- 3♃︎ Jupiter20:22 – 21:13
- 4♂︎ Mars21:13 – 22:04
- 5☉︎ Sun22:04 – 22:55
- 6♀︎ Venus22:55 – 23:47
- 7☿︎ Mercury23:47 – 00:38
- 8☽︎ Moon00:38 – 01:29
- 9♄︎ Saturn01:29 – 02:20
- 10♃︎ Jupiter02:20 – 03:12
- 11♂︎ Mars03:12 – 04:03
- 12☉︎ Sun04:03 – 04:54
Questions
How are the planetary hours calculated in Tokyo?
On Thursday, 7 August 2025, the Sun rises at 04:53 and sets at 18:39: the day lasts 13h 46m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 04:54, lasts 10h 15m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Jupiter, from 04:53 to 06:02: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.