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, 22 August 2026: day of Saturn
- Sunrise
- 05:17
- Sunset
- 18:33
- Next sunrise
- 05:17
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Asia/Tokyo).
Day
- 1♄︎ Saturn05:17 – 06:23
- 2♃︎ Jupiter06:23 – 07:29
- 3♂︎ Mars07:29 – 08:36
- 4☉︎ Sun08:36 – 09:42
- 5♀︎ Venus09:42 – 10:48
- 6☿︎ Mercury10:48 – 11:55
- 7☽︎ Moon11:55 – 13:01
- 8♄︎ Saturn13:01 – 14:07
- 9♃︎ Jupiter14:07 – 15:14
- 10♂︎ Mars15:14 – 16:20
- 11☉︎ Sun16:20 – 17:26
- 12♀︎ Venus17:26 – 18:33
Night
- 1☿︎ Mercury18:33 – 19:26
- 2☽︎ Moon19:26 – 20:20
- 3♄︎ Saturn20:20 – 21:14
- 4♃︎ Jupiter21:14 – 22:07
- 5♂︎ Mars22:07 – 23:01
- 6☉︎ Sun23:01 – 23:55
- 7♀︎ Venus23:55 – 00:49
- 8☿︎ Mercury00:49 – 01:42
- 9☽︎ Moon01:42 – 02:36
- 10♄︎ Saturn02:36 – 03:30
- 11♃︎ Jupiter03:30 – 04:24
- 12♂︎ Mars04:24 – 05:17
Questions
How are the planetary hours calculated in Nagoya?
On Saturday, 22 August 2026, the Sun rises at 05:17 and sets at 18:33: the day lasts 13h 16m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:17, lasts 10h 45m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Saturn, from 05:17 to 06:23: 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.