Planetary hours
in Ottawa.
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 Saturday, 13 December 2025: day of Saturn
- Sunrise
- 07:34
- Sunset
- 16:19
- Next sunrise
- 07:35
A day hour lasts 44 min; a night hour, 1h 16m. Local time (America/Toronto).
Day
- 1♄︎ Saturn07:34 – 08:18
- 2♃︎ Jupiter08:18 – 09:01
- 3♂︎ Mars09:01 – 09:45
- 4☉︎ Sun09:45 – 10:29
- 5♀︎ Venus10:29 – 11:13
- 6☿︎ Mercury11:13 – 11:57
- 7☽︎ Moon11:57 – 12:40
- 8♄︎ Saturn12:40 – 13:24
- 9♃︎ Jupiter13:24 – 14:08
- 10♂︎ Mars14:08 – 14:52
- 11☉︎ Sun14:52 – 15:36
- 12♀︎ Venus15:36 – 16:19
Night
- 1☿︎ Mercury16:19 – 17:36
- 2☽︎ Moon17:36 – 18:52
- 3♄︎ Saturn18:52 – 20:08
- 4♃︎ Jupiter20:08 – 21:24
- 5♂︎ Mars21:24 – 22:41
- 6☉︎ Sun22:41 – 23:57
- 7♀︎ Venus23:57 – 01:13
- 8☿︎ Mercury01:13 – 02:30
- 9☽︎ Moon02:30 – 03:46
- 10♄︎ Saturn03:46 – 05:02
- 11♃︎ Jupiter05:02 – 06:18
- 12♂︎ Mars06:18 – 07:35
Other cities · Canada
Questions
How are the planetary hours calculated in Ottawa?
On Saturday, 13 December 2025, the Sun rises at 07:34 and sets at 16:19: the day lasts 8h 46m, that is twelve day hours of 44 min. The night, until the next sunrise at 07:35, lasts 15h 15m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Saturn, from 07:34 to 08:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.