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 Friday, 4 December 2026: day of Venus
- Sunrise
- 05:34
- Sunset
- 19:55
- Next sunrise
- 05:34
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:34 – 06:46
- 2☿︎ Mercury06:46 – 07:58
- 3☽︎ Moon07:58 – 09:10
- 4♄︎ Saturn09:10 – 10:21
- 5♃︎ Jupiter10:21 – 11:33
- 6♂︎ Mars11:33 – 12:45
- 7☉︎ Sun12:45 – 13:57
- 8♀︎ Venus13:57 – 15:08
- 9☿︎ Mercury15:08 – 16:20
- 10☽︎ Moon16:20 – 17:32
- 11♄︎ Saturn17:32 – 18:44
- 12♃︎ Jupiter18:44 – 19:55
Night
- 1♂︎ Mars19:55 – 20:44
- 2☉︎ Sun20:44 – 21:32
- 3♀︎ Venus21:32 – 22:20
- 4☿︎ Mercury22:20 – 23:08
- 5☽︎ Moon23:08 – 23:57
- 6♄︎ Saturn23:57 – 00:45
- 7♃︎ Jupiter00:45 – 01:33
- 8♂︎ Mars01:33 – 02:21
- 9☉︎ Sun02:21 – 03:09
- 10♀︎ Venus03:09 – 03:58
- 11☿︎ Mercury03:58 – 04:46
- 12☽︎ Moon04:46 – 05:34
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Friday, 4 December 2026, the Sun rises at 05:34 and sets at 19:55: the day lasts 14h 21m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:34, lasts 9h 39m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Venus, 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: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.