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 Sunday, 24 May 2026: day of the Sun
- Sunrise
- 04:19
- Sunset
- 18:47
- Next sunrise
- 04:18
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Asia/Tokyo).
Day
- 1☉︎ Sun04:19 – 05:31
- 2♀︎ Venus05:31 – 06:43
- 3☿︎ Mercury06:43 – 07:56
- 4☽︎ Moon07:56 – 09:08
- 5♄︎ Saturn09:08 – 10:21
- 6♃︎ Jupiter10:21 – 11:33
- 7♂︎ Mars11:33 – 12:45
- 8☉︎ Sun12:45 – 13:58
- 9♀︎ Venus13:58 – 15:10
- 10☿︎ Mercury15:10 – 16:23
- 11☽︎ Moon16:23 – 17:35
- 12♄︎ Saturn17:35 – 18:47
Night
- 1♃︎ Jupiter18:47 – 19:35
- 2♂︎ Mars19:35 – 20:23
- 3☉︎ Sun20:23 – 21:10
- 4♀︎ Venus21:10 – 21:58
- 5☿︎ Mercury21:58 – 22:45
- 6☽︎ Moon22:45 – 23:33
- 7♄︎ Saturn23:33 – 00:20
- 8♃︎ Jupiter00:20 – 01:08
- 9♂︎ Mars01:08 – 01:55
- 10☉︎ Sun01:55 – 02:43
- 11♀︎ Venus02:43 – 03:31
- 12☿︎ Mercury03:31 – 04:18
Questions
How are the planetary hours calculated in Sendai?
On Sunday, 24 May 2026, the Sun rises at 04:19 and sets at 18:47: the day lasts 14h 29m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 04:18, lasts 9h 31m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Sun, from 04:19 to 05:31: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.