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, 2 May 2026: day of Saturn
- Sunrise
- 05:00
- Sunset
- 18:38
- Next sunrise
- 04:59
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn05:00 – 06:08
- 2♃︎ Jupiter06:08 – 07:17
- 3♂︎ Mars07:17 – 08:25
- 4☉︎ Sun08:25 – 09:33
- 5♀︎ Venus09:33 – 10:41
- 6☿︎ Mercury10:41 – 11:49
- 7☽︎ Moon11:49 – 12:57
- 8♄︎ Saturn12:57 – 14:05
- 9♃︎ Jupiter14:05 – 15:14
- 10♂︎ Mars15:14 – 16:22
- 11☉︎ Sun16:22 – 17:30
- 12♀︎ Venus17:30 – 18:38
Night
- 1☿︎ Mercury18:38 – 19:30
- 2☽︎ Moon19:30 – 20:22
- 3♄︎ Saturn20:22 – 21:13
- 4♃︎ Jupiter21:13 – 22:05
- 5♂︎ Mars22:05 – 22:57
- 6☉︎ Sun22:57 – 23:49
- 7♀︎ Venus23:49 – 00:40
- 8☿︎ Mercury00:40 – 01:32
- 9☽︎ Moon01:32 – 02:24
- 10♄︎ Saturn02:24 – 03:16
- 11♃︎ Jupiter03:16 – 04:07
- 12♂︎ Mars04:07 – 04:59
Questions
How are the planetary hours calculated in Nagoya?
On Saturday, 2 May 2026, the Sun rises at 05:00 and sets at 18:38: the day lasts 13h 38m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:59, lasts 10h 21m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Saturn, from 05:00 to 06:08: 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.