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 Monday, 15 December 2025: day of the Moon
- Sunrise
- 07:20
- Sunset
- 17:53
- Next sunrise
- 07:20
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Monterrey).
Day
- 1☽︎ Moon07:20 – 08:12
- 2♄︎ Saturn08:12 – 09:05
- 3♃︎ Jupiter09:05 – 09:58
- 4♂︎ Mars09:58 – 10:51
- 5☉︎ Sun10:51 – 11:43
- 6♀︎ Venus11:43 – 12:36
- 7☿︎ Mercury12:36 – 13:29
- 8☽︎ Moon13:29 – 14:22
- 9♄︎ Saturn14:22 – 15:14
- 10♃︎ Jupiter15:14 – 16:07
- 11♂︎ Mars16:07 – 17:00
- 12☉︎ Sun17:00 – 17:53
Night
- 1♀︎ Venus17:53 – 19:00
- 2☿︎ Mercury19:00 – 20:07
- 3☽︎ Moon20:07 – 21:14
- 4♄︎ Saturn21:14 – 22:22
- 5♃︎ Jupiter22:22 – 23:29
- 6♂︎ Mars23:29 – 00:36
- 7☉︎ Sun00:36 – 01:44
- 8♀︎ Venus01:44 – 02:51
- 9☿︎ Mercury02:51 – 03:58
- 10☽︎ Moon03:58 – 05:06
- 11♄︎ Saturn05:06 – 06:13
- 12♃︎ Jupiter06:13 – 07:20
Other cities · Mexico
Questions
How are the planetary hours calculated in Monterrey?
On Monday, 15 December 2025, the Sun rises at 07:20 and sets at 17:53: the day lasts 10h 33m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:20, lasts 13h 28m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
The Moon, from 07:20 to 08:12: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.