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 Friday, 1 May 2026: day of Venus
- Sunrise
- 05:01
- Sunset
- 18:37
- Next sunrise
- 05:00
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus05:01 – 06:09
- 2☿︎ Mercury06:09 – 07:17
- 3☽︎ Moon07:17 – 08:25
- 4♄︎ Saturn08:25 – 09:33
- 5♃︎ Jupiter09:33 – 10:41
- 6♂︎ Mars10:41 – 11:49
- 7☉︎ Sun11:49 – 12:57
- 8♀︎ Venus12:57 – 14:05
- 9☿︎ Mercury14:05 – 15:13
- 10☽︎ Moon15:13 – 16:21
- 11♄︎ Saturn16:21 – 17:29
- 12♃︎ Jupiter17:29 – 18:37
Night
- 1♂︎ Mars18:37 – 19:29
- 2☉︎ Sun19:29 – 20:21
- 3♀︎ Venus20:21 – 21:13
- 4☿︎ Mercury21:13 – 22:05
- 5☽︎ Moon22:05 – 22:57
- 6♄︎ Saturn22:57 – 23:49
- 7♃︎ Jupiter23:49 – 00:41
- 8♂︎ Mars00:41 – 01:33
- 9☉︎ Sun01:33 – 02:24
- 10♀︎ Venus02:24 – 03:16
- 11☿︎ Mercury03:16 – 04:08
- 12☽︎ Moon04:08 – 05:00
Questions
How are the planetary hours calculated in Nagoya?
On Friday, 1 May 2026, the Sun rises at 05:01 and sets at 18:37: the day lasts 13h 36m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:00, lasts 10h 23m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Venus, from 05:01 to 06:09: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.