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 Tuesday, 16 December 2025: day of Mars
- Sunrise
- 08:42
- Sunset
- 15:42
- Next sunrise
- 08:43
A day hour lasts 35 min; a night hour, 1h 25m. Local time (Europe/London).
Day
- 1♂︎ Mars08:42 – 09:17
- 2☉︎ Sun09:17 – 09:52
- 3♀︎ Venus09:52 – 10:27
- 4☿︎ Mercury10:27 – 11:02
- 5☽︎ Moon11:02 – 11:37
- 6♄︎ Saturn11:37 – 12:12
- 7♃︎ Jupiter12:12 – 12:47
- 8♂︎ Mars12:47 – 13:22
- 9☉︎ Sun13:22 – 13:57
- 10♀︎ Venus13:57 – 14:32
- 11☿︎ Mercury14:32 – 15:07
- 12☽︎ Moon15:07 – 15:42
Night
- 1♄︎ Saturn15:42 – 17:07
- 2♃︎ Jupiter17:07 – 18:33
- 3♂︎ Mars18:33 – 19:58
- 4☉︎ Sun19:58 – 21:23
- 5♀︎ Venus21:23 – 22:48
- 6☿︎ Mercury22:48 – 00:13
- 7☽︎ Moon00:13 – 01:38
- 8♄︎ Saturn01:38 – 03:03
- 9♃︎ Jupiter03:03 – 04:28
- 10♂︎ Mars04:28 – 05:53
- 11☉︎ Sun05:53 – 07:18
- 12♀︎ Venus07:18 – 08:43
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Glasgow?
On Tuesday, 16 December 2025, the Sun rises at 08:42 and sets at 15:42: the day lasts 7h 01m, that is twelve day hours of 35 min. The night, until the next sunrise at 08:43, lasts 17h 00m: twelve night hours of 1h 25m.
Which planet rules the first hour that day?
Mars, from 08:42 to 09:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.