Planetary hours
in Sendai.
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, 24 April 2026: day of Venus
- Sunrise
- 04:49
- Sunset
- 18:20
- Next sunrise
- 04:47
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tokyo).
Day
- 1♀︎ Venus04:49 – 05:56
- 2☿︎ Mercury05:56 – 07:04
- 3☽︎ Moon07:04 – 08:12
- 4♄︎ Saturn08:12 – 09:19
- 5♃︎ Jupiter09:19 – 10:27
- 6♂︎ Mars10:27 – 11:35
- 7☉︎ Sun11:35 – 12:42
- 8♀︎ Venus12:42 – 13:50
- 9☿︎ Mercury13:50 – 14:57
- 10☽︎ Moon14:57 – 16:05
- 11♄︎ Saturn16:05 – 17:13
- 12♃︎ Jupiter17:13 – 18:20
Night
- 1♂︎ Mars18:20 – 19:13
- 2☉︎ Sun19:13 – 20:05
- 3♀︎ Venus20:05 – 20:57
- 4☿︎ Mercury20:57 – 21:49
- 5☽︎ Moon21:49 – 22:42
- 6♄︎ Saturn22:42 – 23:34
- 7♃︎ Jupiter23:34 – 00:26
- 8♂︎ Mars00:26 – 01:18
- 9☉︎ Sun01:18 – 02:11
- 10♀︎ Venus02:11 – 03:03
- 11☿︎ Mercury03:03 – 03:55
- 12☽︎ Moon03:55 – 04:47
Questions
How are the planetary hours calculated in Sendai?
On Friday, 24 April 2026, the Sun rises at 04:49 and sets at 18:20: the day lasts 13h 32m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 04:47, lasts 10h 27m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Venus, from 04:49 to 05:56: 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.