Planetary hours
in Glasgow.
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, 21 December 2025: day of the Sun
- Sunrise
- 08:45
- Sunset
- 15:44
- Next sunrise
- 08:46
A day hour lasts 35 min; a night hour, 1h 25m. Local time (Europe/London).
Day
- 1☉︎ Sun08:45 – 09:20
- 2♀︎ Venus09:20 – 09:55
- 3☿︎ Mercury09:55 – 10:30
- 4☽︎ Moon10:30 – 11:05
- 5♄︎ Saturn11:05 – 11:40
- 6♃︎ Jupiter11:40 – 12:15
- 7♂︎ Mars12:15 – 12:50
- 8☉︎ Sun12:50 – 13:25
- 9♀︎ Venus13:25 – 13:59
- 10☿︎ Mercury13:59 – 14:34
- 11☽︎ Moon14:34 – 15:09
- 12♄︎ Saturn15:09 – 15:44
Night
- 1♃︎ Jupiter15:44 – 17:09
- 2♂︎ Mars17:09 – 18:34
- 3☉︎ Sun18:34 – 20:00
- 4♀︎ Venus20:00 – 21:25
- 5☿︎ Mercury21:25 – 22:50
- 6☽︎ Moon22:50 – 00:15
- 7♄︎ Saturn00:15 – 01:40
- 8♃︎ Jupiter01:40 – 03:05
- 9♂︎ Mars03:05 – 04:30
- 10☉︎ Sun04:30 – 05:56
- 11♀︎ Venus05:56 – 07:21
- 12☿︎ Mercury07:21 – 08:46
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Glasgow?
On Sunday, 21 December 2025, the Sun rises at 08:45 and sets at 15:44: the day lasts 6h 59m, that is twelve day hours of 35 min. The night, until the next sunrise at 08:46, lasts 17h 02m: twelve night hours of 1h 25m.
Which planet rules the first hour that day?
The Sun, from 08:45 to 09:20: 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.