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 Sunday, 2 August 2026: day of the Sun
- Sunrise
- 05:01
- Sunset
- 18:55
- Next sunrise
- 05:02
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun05:01 – 06:11
- 2♀︎ Venus06:11 – 07:20
- 3☿︎ Mercury07:20 – 08:30
- 4☽︎ Moon08:30 – 09:39
- 5♄︎ Saturn09:39 – 10:48
- 6♃︎ Jupiter10:48 – 11:58
- 7♂︎ Mars11:58 – 13:07
- 8☉︎ Sun13:07 – 14:17
- 9♀︎ Venus14:17 – 15:26
- 10☿︎ Mercury15:26 – 16:36
- 11☽︎ Moon16:36 – 17:45
- 12♄︎ Saturn17:45 – 18:55
Night
- 1♃︎ Jupiter18:55 – 19:45
- 2♂︎ Mars19:45 – 20:36
- 3☉︎ Sun20:36 – 21:26
- 4♀︎ Venus21:26 – 22:17
- 5☿︎ Mercury22:17 – 23:08
- 6☽︎ Moon23:08 – 23:58
- 7♄︎ Saturn23:58 – 00:49
- 8♃︎ Jupiter00:49 – 01:40
- 9♂︎ Mars01:40 – 02:30
- 10☉︎ Sun02:30 – 03:21
- 11♀︎ Venus03:21 – 04:11
- 12☿︎ Mercury04:11 – 05:02
Questions
How are the planetary hours calculated in Nagoya?
On Sunday, 2 August 2026, the Sun rises at 05:01 and sets at 18:55: the day lasts 13h 53m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 05:02, lasts 10h 08m: twelve night hours of 51 min.
Which planet rules the first hour that day?
The Sun, from 05:01 to 06:11: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.