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, 13 August 2026: day of Jupiter
- Sunrise
- 04:58
- Sunset
- 18:33
- Next sunrise
- 04:59
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♃︎ Jupiter04:58 – 06:06
- 2♂︎ Mars06:06 – 07:14
- 3☉︎ Sun07:14 – 08:22
- 4♀︎ Venus08:22 – 09:30
- 5☿︎ Mercury09:30 – 10:37
- 6☽︎ Moon10:37 – 11:45
- 7♄︎ Saturn11:45 – 12:53
- 8♃︎ Jupiter12:53 – 14:01
- 9♂︎ Mars14:01 – 15:09
- 10☉︎ Sun15:09 – 16:17
- 11♀︎ Venus16:17 – 17:25
- 12☿︎ Mercury17:25 – 18:33
Night
- 1☽︎ Moon18:33 – 19:25
- 2♄︎ Saturn19:25 – 20:17
- 3♃︎ Jupiter20:17 – 21:09
- 4♂︎ Mars21:09 – 22:02
- 5☉︎ Sun22:02 – 22:54
- 6♀︎ Venus22:54 – 23:46
- 7☿︎ Mercury23:46 – 00:38
- 8☽︎ Moon00:38 – 01:30
- 9♄︎ Saturn01:30 – 02:22
- 10♃︎ Jupiter02:22 – 03:14
- 11♂︎ Mars03:14 – 04:06
- 12☉︎ Sun04:06 – 04:59
Questions
How are the planetary hours calculated in Tokyo?
On Thursday, 13 August 2026, the Sun rises at 04:58 and sets at 18:33: the day lasts 13h 35m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:59, lasts 10h 25m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Jupiter, from 04:58 to 06:06: 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.