Planetary hours
in Merlo.
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, 1 December 2025: day of the Moon
- Sunrise
- 05:34
- Sunset
- 19:53
- Next sunrise
- 05:34
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☽︎ Moon05:34 – 06:46
- 2♄︎ Saturn06:46 – 07:58
- 3♃︎ Jupiter07:58 – 09:09
- 4♂︎ Mars09:09 – 10:21
- 5☉︎ Sun10:21 – 11:32
- 6♀︎ Venus11:32 – 12:44
- 7☿︎ Mercury12:44 – 13:55
- 8☽︎ Moon13:55 – 15:07
- 9♄︎ Saturn15:07 – 16:18
- 10♃︎ Jupiter16:18 – 17:30
- 11♂︎ Mars17:30 – 18:41
- 12☉︎ Sun18:41 – 19:53
Night
- 1♀︎ Venus19:53 – 20:41
- 2☿︎ Mercury20:41 – 21:30
- 3☽︎ Moon21:30 – 22:18
- 4♄︎ Saturn22:18 – 23:07
- 5♃︎ Jupiter23:07 – 23:55
- 6♂︎ Mars23:55 – 00:44
- 7☉︎ Sun00:44 – 01:32
- 8♀︎ Venus01:32 – 02:21
- 9☿︎ Mercury02:21 – 03:09
- 10☽︎ Moon03:09 – 03:57
- 11♄︎ Saturn03:57 – 04:46
- 12♃︎ Jupiter04:46 – 05:34
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Monday, 1 December 2025, the Sun rises at 05:34 and sets at 19:53: the day lasts 14h 19m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:34, lasts 9h 41m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Moon, from 05:34 to 06:46: 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.