Planetary hours
in Nagoya.
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, 9 May 2026: day of Saturn
- Sunrise
- 04:53
- Sunset
- 18:44
- Next sunrise
- 04:52
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:53 – 06:03
- 2♃︎ Jupiter06:03 – 07:12
- 3♂︎ Mars07:12 – 08:21
- 4☉︎ Sun08:21 – 09:30
- 5♀︎ Venus09:30 – 10:39
- 6☿︎ Mercury10:39 – 11:49
- 7☽︎ Moon11:49 – 12:58
- 8♄︎ Saturn12:58 – 14:07
- 9♃︎ Jupiter14:07 – 15:16
- 10♂︎ Mars15:16 – 16:25
- 11☉︎ Sun16:25 – 17:35
- 12♀︎ Venus17:35 – 18:44
Night
- 1☿︎ Mercury18:44 – 19:35
- 2☽︎ Moon19:35 – 20:25
- 3♄︎ Saturn20:25 – 21:16
- 4♃︎ Jupiter21:16 – 22:07
- 5♂︎ Mars22:07 – 22:57
- 6☉︎ Sun22:57 – 23:48
- 7♀︎ Venus23:48 – 00:39
- 8☿︎ Mercury00:39 – 01:30
- 9☽︎ Moon01:30 – 02:20
- 10♄︎ Saturn02:20 – 03:11
- 11♃︎ Jupiter03:11 – 04:02
- 12♂︎ Mars04:02 – 04:52
Questions
How are the planetary hours calculated in Nagoya?
On Saturday, 9 May 2026, the Sun rises at 04:53 and sets at 18:44: the day lasts 13h 50m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 04:52, lasts 10h 09m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Saturn, from 04:53 to 06:03: 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.