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 Saturday, 27 December 2025: day of Saturn
- Sunrise
- 08:39
- Sunset
- 16:35
- Next sunrise
- 08:39
A day hour lasts 40 min; a night hour, 1h 20m. Local time (America/Edmonton).
Day
- 1♄︎ Saturn08:39 – 09:19
- 2♃︎ Jupiter09:19 – 09:58
- 3♂︎ Mars09:58 – 10:38
- 4☉︎ Sun10:38 – 11:18
- 5♀︎ Venus11:18 – 11:58
- 6☿︎ Mercury11:58 – 12:37
- 7☽︎ Moon12:37 – 13:17
- 8♄︎ Saturn13:17 – 13:57
- 9♃︎ Jupiter13:57 – 14:36
- 10♂︎ Mars14:36 – 15:16
- 11☉︎ Sun15:16 – 15:56
- 12♀︎ Venus15:56 – 16:35
Night
- 1☿︎ Mercury16:35 – 17:56
- 2☽︎ Moon17:56 – 19:16
- 3♄︎ Saturn19:16 – 20:36
- 4♃︎ Jupiter20:36 – 21:57
- 5♂︎ Mars21:57 – 23:17
- 6☉︎ Sun23:17 – 00:37
- 7♀︎ Venus00:37 – 01:58
- 8☿︎ Mercury01:58 – 03:18
- 9☽︎ Moon03:18 – 04:38
- 10♄︎ Saturn04:38 – 05:59
- 11♃︎ Jupiter05:59 – 07:19
- 12♂︎ Mars07:19 – 08:39
Other cities · Canada
Questions
How are the planetary hours calculated in Calgary?
On Saturday, 27 December 2025, the Sun rises at 08:39 and sets at 16:35: the day lasts 7h 56m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:39, lasts 16h 04m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Saturn, from 08:39 to 09:19: 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.