Planetary hours
in Saitama.
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, 16 May 2025: day of Venus
- Sunrise
- 04:35
- Sunset
- 18:40
- Next sunrise
- 04:34
A day hour lasts 1h 10m; a night hour, 49 min. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus04:35 – 05:45
- 2☿︎ Mercury05:45 – 06:56
- 3☽︎ Moon06:56 – 08:06
- 4♄︎ Saturn08:06 – 09:17
- 5♃︎ Jupiter09:17 – 10:27
- 6♂︎ Mars10:27 – 11:37
- 7☉︎ Sun11:37 – 12:48
- 8♀︎ Venus12:48 – 13:58
- 9☿︎ Mercury13:58 – 15:09
- 10☽︎ Moon15:09 – 16:19
- 11♄︎ Saturn16:19 – 17:30
- 12♃︎ Jupiter17:30 – 18:40
Night
- 1♂︎ Mars18:40 – 19:30
- 2☉︎ Sun19:30 – 20:19
- 3♀︎ Venus20:19 – 21:09
- 4☿︎ Mercury21:09 – 21:58
- 5☽︎ Moon21:58 – 22:48
- 6♄︎ Saturn22:48 – 23:37
- 7♃︎ Jupiter23:37 – 00:27
- 8♂︎ Mars00:27 – 01:16
- 9☉︎ Sun01:16 – 02:06
- 10♀︎ Venus02:06 – 02:55
- 11☿︎ Mercury02:55 – 03:45
- 12☽︎ Moon03:45 – 04:34
Questions
How are the planetary hours calculated in Saitama?
On Friday, 16 May 2025, the Sun rises at 04:35 and sets at 18:40: the day lasts 14h 05m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 04:34, lasts 9h 54m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Venus, from 04:35 to 05:45: 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.