Planetary hours
in Monterrey.
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, 23 December 2025: day of Mars
- Sunrise
- 07:24
- Sunset
- 17:56
- Next sunrise
- 07:24
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Monterrey).
Day
- 1♂︎ Mars07:24 – 08:17
- 2☉︎ Sun08:17 – 09:09
- 3♀︎ Venus09:09 – 10:02
- 4☿︎ Mercury10:02 – 10:55
- 5☽︎ Moon10:55 – 11:47
- 6♄︎ Saturn11:47 – 12:40
- 7♃︎ Jupiter12:40 – 13:33
- 8♂︎ Mars13:33 – 14:25
- 9☉︎ Sun14:25 – 15:18
- 10♀︎ Venus15:18 – 16:11
- 11☿︎ Mercury16:11 – 17:04
- 12☽︎ Moon17:04 – 17:56
Night
- 1♄︎ Saturn17:56 – 19:04
- 2♃︎ Jupiter19:04 – 20:11
- 3♂︎ Mars20:11 – 21:18
- 4☉︎ Sun21:18 – 22:26
- 5♀︎ Venus22:26 – 23:33
- 6☿︎ Mercury23:33 – 00:40
- 7☽︎ Moon00:40 – 01:48
- 8♄︎ Saturn01:48 – 02:55
- 9♃︎ Jupiter02:55 – 04:02
- 10♂︎ Mars04:02 – 05:10
- 11☉︎ Sun05:10 – 06:17
- 12♀︎ Venus06:17 – 07:24
Other cities · Mexico
Questions
How are the planetary hours calculated in Monterrey?
On Tuesday, 23 December 2025, the Sun rises at 07:24 and sets at 17:56: the day lasts 10h 32m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:24, lasts 13h 28m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Mars, from 07:24 to 08:17: 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.