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 Tuesday, 11 August 2026: day of Mars
- Sunrise
- 05:08
- Sunset
- 18:46
- Next sunrise
- 05:09
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars05:08 – 06:16
- 2☉︎ Sun06:16 – 07:24
- 3♀︎ Venus07:24 – 08:33
- 4☿︎ Mercury08:33 – 09:41
- 5☽︎ Moon09:41 – 10:49
- 6♄︎ Saturn10:49 – 11:57
- 7♃︎ Jupiter11:57 – 13:05
- 8♂︎ Mars13:05 – 14:13
- 9☉︎ Sun14:13 – 15:21
- 10♀︎ Venus15:21 – 16:29
- 11☿︎ Mercury16:29 – 17:37
- 12☽︎ Moon17:37 – 18:46
Night
- 1♄︎ Saturn18:46 – 19:38
- 2♃︎ Jupiter19:38 – 20:29
- 3♂︎ Mars20:29 – 21:21
- 4☉︎ Sun21:21 – 22:13
- 5♀︎ Venus22:13 – 23:05
- 6☿︎ Mercury23:05 – 23:57
- 7☽︎ Moon23:57 – 00:49
- 8♄︎ Saturn00:49 – 01:41
- 9♃︎ Jupiter01:41 – 02:33
- 10♂︎ Mars02:33 – 03:25
- 11☉︎ Sun03:25 – 04:17
- 12♀︎ Venus04:17 – 05:09
Questions
How are the planetary hours calculated in Nagoya?
On Tuesday, 11 August 2026, the Sun rises at 05:08 and sets at 18:46: the day lasts 13h 37m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:09, lasts 10h 23m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Mars, from 05:08 to 06:16: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.