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, 20 April 2026: day of the Moon
- Sunrise
- 07:22
- Sunset
- 18:24
- Next sunrise
- 07:23
A day hour lasts 55 min; a night hour, 1h 05m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☽︎ Moon07:22 – 08:17
- 2♄︎ Saturn08:17 – 09:12
- 3♃︎ Jupiter09:12 – 10:07
- 4♂︎ Mars10:07 – 11:03
- 5☉︎ Sun11:03 – 11:58
- 6♀︎ Venus11:58 – 12:53
- 7☿︎ Mercury12:53 – 13:48
- 8☽︎ Moon13:48 – 14:43
- 9♄︎ Saturn14:43 – 15:39
- 10♃︎ Jupiter15:39 – 16:34
- 11♂︎ Mars16:34 – 17:29
- 12☉︎ Sun17:29 – 18:24
Night
- 1♀︎ Venus18:24 – 19:29
- 2☿︎ Mercury19:29 – 20:34
- 3☽︎ Moon20:34 – 21:39
- 4♄︎ Saturn21:39 – 22:44
- 5♃︎ Jupiter22:44 – 23:49
- 6♂︎ Mars23:49 – 00:53
- 7☉︎ Sun00:53 – 01:58
- 8♀︎ Venus01:58 – 03:03
- 9☿︎ Mercury03:03 – 04:08
- 10☽︎ Moon04:08 – 05:13
- 11♄︎ Saturn05:13 – 06:18
- 12♃︎ Jupiter06:18 – 07:23
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Monday, 20 April 2026, the Sun rises at 07:22 and sets at 18:24: the day lasts 11h 03m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:23, lasts 12h 58m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
The Moon, from 07:22 to 08:17: 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.