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 Monday, 18 May 2026: day of the Moon
- Sunrise
- 04:33
- Sunset
- 18:42
- Next sunrise
- 04:33
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tokyo).
Day
- 1☽︎ Moon04:33 – 05:44
- 2♄︎ Saturn05:44 – 06:55
- 3♃︎ Jupiter06:55 – 08:05
- 4♂︎ Mars08:05 – 09:16
- 5☉︎ Sun09:16 – 10:27
- 6♀︎ Venus10:27 – 11:38
- 7☿︎ Mercury11:38 – 12:48
- 8☽︎ Moon12:48 – 13:59
- 9♄︎ Saturn13:59 – 15:10
- 10♃︎ Jupiter15:10 – 16:20
- 11♂︎ Mars16:20 – 17:31
- 12☉︎ Sun17:31 – 18:42
Night
- 1♀︎ Venus18:42 – 19:31
- 2☿︎ Mercury19:31 – 20:20
- 3☽︎ Moon20:20 – 21:09
- 4♄︎ Saturn21:09 – 21:59
- 5♃︎ Jupiter21:59 – 22:48
- 6♂︎ Mars22:48 – 23:37
- 7☉︎ Sun23:37 – 00:26
- 8♀︎ Venus00:26 – 01:16
- 9☿︎ Mercury01:16 – 02:05
- 10☽︎ Moon02:05 – 02:54
- 11♄︎ Saturn02:54 – 03:43
- 12♃︎ Jupiter03:43 – 04:33
Questions
How are the planetary hours calculated in Saitama?
On Monday, 18 May 2026, the Sun rises at 04:33 and sets at 18:42: the day lasts 14h 08m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:33, lasts 9h 51m: twelve night hours of 49 min.
Which planet rules the first hour that day?
The Moon, from 04:33 to 05:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.