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 Wednesday, 31 December 2025: day of Mercury
- Sunrise
- 07:42
- Sunset
- 16:29
- Next sunrise
- 07:42
A day hour lasts 44 min; a night hour, 1h 16m. Local time (America/Toronto).
Day
- 1☿︎ Mercury07:42 – 08:26
- 2☽︎ Moon08:26 – 09:10
- 3♄︎ Saturn09:10 – 09:54
- 4♃︎ Jupiter09:54 – 10:38
- 5♂︎ Mars10:38 – 11:22
- 6☉︎ Sun11:22 – 12:06
- 7♀︎ Venus12:06 – 12:49
- 8☿︎ Mercury12:49 – 13:33
- 9☽︎ Moon13:33 – 14:17
- 10♄︎ Saturn14:17 – 15:01
- 11♃︎ Jupiter15:01 – 15:45
- 12♂︎ Mars15:45 – 16:29
Night
- 1☉︎ Sun16:29 – 17:45
- 2♀︎ Venus17:45 – 19:01
- 3☿︎ Mercury19:01 – 20:17
- 4☽︎ Moon20:17 – 21:33
- 5♄︎ Saturn21:33 – 22:50
- 6♃︎ Jupiter22:50 – 00:06
- 7♂︎ Mars00:06 – 01:22
- 8☉︎ Sun01:22 – 02:38
- 9♀︎ Venus02:38 – 03:54
- 10☿︎ Mercury03:54 – 05:10
- 11☽︎ Moon05:10 – 06:26
- 12♄︎ Saturn06:26 – 07:42
Other cities · Canada
Questions
How are the planetary hours calculated in Ottawa?
On Wednesday, 31 December 2025, the Sun rises at 07:42 and sets at 16:29: the day lasts 8h 47m, that is twelve day hours of 44 min. The night, until the next sunrise at 07:42, lasts 15h 13m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Mercury, from 07:42 to 08:26: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.