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, 28 July 2026: day of Mars
- Sunrise
- 04:58
- Sunset
- 18:59
- Next sunrise
- 04:58
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tokyo).
Day
- 1♂︎ Mars04:58 – 06:08
- 2☉︎ Sun06:08 – 07:18
- 3♀︎ Venus07:18 – 08:28
- 4☿︎ Mercury08:28 – 09:38
- 5☽︎ Moon09:38 – 10:48
- 6♄︎ Saturn10:48 – 11:58
- 7♃︎ Jupiter11:58 – 13:08
- 8♂︎ Mars13:08 – 14:18
- 9☉︎ Sun14:18 – 15:28
- 10♀︎ Venus15:28 – 16:39
- 11☿︎ Mercury16:39 – 17:49
- 12☽︎ Moon17:49 – 18:59
Night
- 1♄︎ Saturn18:59 – 19:49
- 2♃︎ Jupiter19:49 – 20:39
- 3♂︎ Mars20:39 – 21:29
- 4☉︎ Sun21:29 – 22:19
- 5♀︎ Venus22:19 – 23:09
- 6☿︎ Mercury23:09 – 23:59
- 7☽︎ Moon23:59 – 00:49
- 8♄︎ Saturn00:49 – 01:38
- 9♃︎ Jupiter01:38 – 02:28
- 10♂︎ Mars02:28 – 03:18
- 11☉︎ Sun03:18 – 04:08
- 12♀︎ Venus04:08 – 04:58
Questions
How are the planetary hours calculated in Nagoya?
On Tuesday, 28 July 2026, the Sun rises at 04:58 and sets at 18:59: the day lasts 14h 01m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:58, lasts 10h 00m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Mars, from 04:58 to 06:08: 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.