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, 30 May 2026: day of Saturn
- Sunrise
- 04:40
- Sunset
- 19:00
- Next sunrise
- 04:39
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn04:40 – 05:51
- 2♃︎ Jupiter05:51 – 07:03
- 3♂︎ Mars07:03 – 08:15
- 4☉︎ Sun08:15 – 09:26
- 5♀︎ Venus09:26 – 10:38
- 6☿︎ Mercury10:38 – 11:50
- 7☽︎ Moon11:50 – 13:01
- 8♄︎ Saturn13:01 – 14:13
- 9♃︎ Jupiter14:13 – 15:25
- 10♂︎ Mars15:25 – 16:36
- 11☉︎ Sun16:36 – 17:48
- 12♀︎ Venus17:48 – 19:00
Night
- 1☿︎ Mercury19:00 – 19:48
- 2☽︎ Moon19:48 – 20:36
- 3♄︎ Saturn20:36 – 21:24
- 4♃︎ Jupiter21:24 – 22:13
- 5♂︎ Mars22:13 – 23:01
- 6☉︎ Sun23:01 – 23:49
- 7♀︎ Venus23:49 – 00:38
- 8☿︎ Mercury00:38 – 01:26
- 9☽︎ Moon01:26 – 02:14
- 10♄︎ Saturn02:14 – 03:03
- 11♃︎ Jupiter03:03 – 03:51
- 12♂︎ Mars03:51 – 04:39
Questions
How are the planetary hours calculated in Nagoya?
On Saturday, 30 May 2026, the Sun rises at 04:40 and sets at 19:00: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 04:39, lasts 9h 40m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Saturn, from 04:40 to 05:51: 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.