Planetary hours
in Philadelphia.
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, 10 December 2025: day of Mercury
- Sunrise
- 07:11
- Sunset
- 16:35
- Next sunrise
- 07:12
A day hour lasts 47 min; a night hour, 1h 13m. Local time (America/New_York).
Day
- 1☿︎ Mercury07:11 – 07:58
- 2☽︎ Moon07:58 – 08:45
- 3♄︎ Saturn08:45 – 09:32
- 4♃︎ Jupiter09:32 – 10:19
- 5♂︎ Mars10:19 – 11:06
- 6☉︎ Sun11:06 – 11:53
- 7♀︎ Venus11:53 – 12:40
- 8☿︎ Mercury12:40 – 13:27
- 9☽︎ Moon13:27 – 14:14
- 10♄︎ Saturn14:14 – 15:01
- 11♃︎ Jupiter15:01 – 15:48
- 12♂︎ Mars15:48 – 16:35
Night
- 1☉︎ Sun16:35 – 17:48
- 2♀︎ Venus17:48 – 19:01
- 3☿︎ Mercury19:01 – 20:14
- 4☽︎ Moon20:14 – 21:27
- 5♄︎ Saturn21:27 – 22:40
- 6♃︎ Jupiter22:40 – 23:53
- 7♂︎ Mars23:53 – 01:07
- 8☉︎ Sun01:07 – 02:20
- 9♀︎ Venus02:20 – 03:33
- 10☿︎ Mercury03:33 – 04:46
- 11☽︎ Moon04:46 – 05:59
- 12♄︎ Saturn05:59 – 07:12
Other cities · United States
Questions
How are the planetary hours calculated in Philadelphia?
On Wednesday, 10 December 2025, the Sun rises at 07:11 and sets at 16:35: the day lasts 9h 24m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:12, lasts 14h 37m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Mercury, from 07:11 to 07:58: 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.