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, 21 October 2026: day of Mercury
- Sunrise
- 06:05
- Sunset
- 19:14
- Next sunrise
- 06:04
A day hour lasts 1h 06m; a night hour, 54 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury06:05 – 07:10
- 2☽︎ Moon07:10 – 08:16
- 3♄︎ Saturn08:16 – 09:22
- 4♃︎ Jupiter09:22 – 10:28
- 5♂︎ Mars10:28 – 11:34
- 6☉︎ Sun11:34 – 12:39
- 7♀︎ Venus12:39 – 13:45
- 8☿︎ Mercury13:45 – 14:51
- 9☽︎ Moon14:51 – 15:57
- 10♄︎ Saturn15:57 – 17:02
- 11♃︎ Jupiter17:02 – 18:08
- 12♂︎ Mars18:08 – 19:14
Night
- 1☉︎ Sun19:14 – 20:08
- 2♀︎ Venus20:08 – 21:02
- 3☿︎ Mercury21:02 – 21:56
- 4☽︎ Moon21:56 – 22:50
- 5♄︎ Saturn22:50 – 23:45
- 6♃︎ Jupiter23:45 – 00:39
- 7♂︎ Mars00:39 – 01:33
- 8☉︎ Sun01:33 – 02:27
- 9♀︎ Venus02:27 – 03:21
- 10☿︎ Mercury03:21 – 04:15
- 11☽︎ Moon04:15 – 05:09
- 12♄︎ Saturn05:09 – 06:04
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 21 October 2026, the Sun rises at 06:05 and sets at 19:14: the day lasts 13h 09m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 06:04, lasts 10h 50m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mercury, from 06:05 to 07:10: 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.