Planetary hours
in Calgary.
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, 12 December 2025: day of Venus
- Sunrise
- 08:31
- Sunset
- 16:29
- Next sunrise
- 08:31
A day hour lasts 40 min; a night hour, 1h 20m. Local time (America/Edmonton).
Day
- 1♀︎ Venus08:31 – 09:10
- 2☿︎ Mercury09:10 – 09:50
- 3☽︎ Moon09:50 – 10:30
- 4♄︎ Saturn10:30 – 11:10
- 5♃︎ Jupiter11:10 – 11:50
- 6♂︎ Mars11:50 – 12:30
- 7☉︎ Sun12:30 – 13:10
- 8♀︎ Venus13:10 – 13:49
- 9☿︎ Mercury13:49 – 14:29
- 10☽︎ Moon14:29 – 15:09
- 11♄︎ Saturn15:09 – 15:49
- 12♃︎ Jupiter15:49 – 16:29
Night
- 1♂︎ Mars16:29 – 17:49
- 2☉︎ Sun17:49 – 19:09
- 3♀︎ Venus19:09 – 20:30
- 4☿︎ Mercury20:30 – 21:50
- 5☽︎ Moon21:50 – 23:10
- 6♄︎ Saturn23:10 – 00:30
- 7♃︎ Jupiter00:30 – 01:50
- 8♂︎ Mars01:50 – 03:11
- 9☉︎ Sun03:11 – 04:31
- 10♀︎ Venus04:31 – 05:51
- 11☿︎ Mercury05:51 – 07:11
- 12☽︎ Moon07:11 – 08:31
Other cities · Canada
Questions
How are the planetary hours calculated in Calgary?
On Friday, 12 December 2025, the Sun rises at 08:31 and sets at 16:29: the day lasts 7h 58m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:31, lasts 16h 03m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Venus, from 08:31 to 09:10: 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.