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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 05:34
- Sunset
- 19:59
- Next sunrise
- 05:34
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:34 – 06:46
- 2☽︎ Moon06:46 – 07:59
- 3♄︎ Saturn07:59 – 09:11
- 4♃︎ Jupiter09:11 – 10:23
- 5♂︎ Mars10:23 – 11:35
- 6☉︎ Sun11:35 – 12:47
- 7♀︎ Venus12:47 – 13:59
- 8☿︎ Mercury13:59 – 15:11
- 9☽︎ Moon15:11 – 16:23
- 10♄︎ Saturn16:23 – 17:35
- 11♃︎ Jupiter17:35 – 18:47
- 12♂︎ Mars18:47 – 19:59
Night
- 1☉︎ Sun19:59 – 20:47
- 2♀︎ Venus20:47 – 21:35
- 3☿︎ Mercury21:35 – 22:23
- 4☽︎ Moon22:23 – 23:11
- 5♄︎ Saturn23:11 – 23:59
- 6♃︎ Jupiter23:59 – 00:47
- 7♂︎ Mars00:47 – 01:35
- 8☉︎ Sun01:35 – 02:23
- 9♀︎ Venus02:23 – 03:11
- 10☿︎ Mercury03:11 – 03:59
- 11☽︎ Moon03:59 – 04:47
- 12♄︎ Saturn04:47 – 05:34
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 9 December 2026, the Sun rises at 05:34 and sets at 19:59: the day lasts 14h 25m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:34, lasts 9h 35m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, 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: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.