Planetary hours
in San Antonio.
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
- 07:21
- Sunset
- 17:37
- Next sunrise
- 07:22
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Chicago).
Day
- 1♂︎ Mars07:21 – 08:13
- 2☉︎ Sun08:13 – 09:04
- 3♀︎ Venus09:04 – 09:55
- 4☿︎ Mercury09:55 – 10:47
- 5☽︎ Moon10:47 – 11:38
- 6♄︎ Saturn11:38 – 12:29
- 7♃︎ Jupiter12:29 – 13:21
- 8♂︎ Mars13:21 – 14:12
- 9☉︎ Sun14:12 – 15:03
- 10♀︎ Venus15:03 – 15:55
- 11☿︎ Mercury15:55 – 16:46
- 12☽︎ Moon16:46 – 17:37
Night
- 1♄︎ Saturn17:37 – 18:46
- 2♃︎ Jupiter18:46 – 19:55
- 3♂︎ Mars19:55 – 21:03
- 4☉︎ Sun21:03 – 22:12
- 5♀︎ Venus22:12 – 23:21
- 6☿︎ Mercury23:21 – 00:30
- 7☽︎ Moon00:30 – 01:38
- 8♄︎ Saturn01:38 – 02:47
- 9♃︎ Jupiter02:47 – 03:56
- 10♂︎ Mars03:56 – 05:04
- 11☉︎ Sun05:04 – 06:13
- 12♀︎ Venus06:13 – 07:22
Other cities · United States
Questions
How are the planetary hours calculated in San Antonio?
On Tuesday, 16 December 2025, the Sun rises at 07:21 and sets at 17:37: the day lasts 10h 16m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:22, lasts 13h 44m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Mars, from 07:21 to 08:13: 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.