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 Saturday, 23 May 2026: day of Saturn
- Sunrise
- 07:47
- Sunset
- 17:55
- Next sunrise
- 07:48
A day hour lasts 51 min; a night hour, 1h 09m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♄︎ Saturn07:47 – 08:38
- 2♃︎ Jupiter08:38 – 09:28
- 3♂︎ Mars09:28 – 10:19
- 4☉︎ Sun10:19 – 11:10
- 5♀︎ Venus11:10 – 12:00
- 6☿︎ Mercury12:00 – 12:51
- 7☽︎ Moon12:51 – 13:42
- 8♄︎ Saturn13:42 – 14:32
- 9♃︎ Jupiter14:32 – 15:23
- 10♂︎ Mars15:23 – 16:14
- 11☉︎ Sun16:14 – 17:04
- 12♀︎ Venus17:04 – 17:55
Night
- 1☿︎ Mercury17:55 – 19:04
- 2☽︎ Moon19:04 – 20:14
- 3♄︎ Saturn20:14 – 21:23
- 4♃︎ Jupiter21:23 – 22:33
- 5♂︎ Mars22:33 – 23:42
- 6☉︎ Sun23:42 – 00:51
- 7♀︎ Venus00:51 – 02:01
- 8☿︎ Mercury02:01 – 03:10
- 9☽︎ Moon03:10 – 04:20
- 10♄︎ Saturn04:20 – 05:29
- 11♃︎ Jupiter05:29 – 06:38
- 12♂︎ Mars06:38 – 07:48
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Saturday, 23 May 2026, the Sun rises at 07:47 and sets at 17:55: the day lasts 10h 08m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:48, lasts 13h 53m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Saturn, from 07:47 to 08:38: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.