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, 19 December 2026: day of Saturn
- Sunrise
- 05:37
- Sunset
- 20:06
- Next sunrise
- 05:38
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♄︎ Saturn05:37 – 06:49
- 2♃︎ Jupiter06:49 – 08:02
- 3♂︎ Mars08:02 – 09:14
- 4☉︎ Sun09:14 – 10:27
- 5♀︎ Venus10:27 – 11:39
- 6☿︎ Mercury11:39 – 12:52
- 7☽︎ Moon12:52 – 14:04
- 8♄︎ Saturn14:04 – 15:16
- 9♃︎ Jupiter15:16 – 16:29
- 10♂︎ Mars16:29 – 17:41
- 11☉︎ Sun17:41 – 18:54
- 12♀︎ Venus18:54 – 20:06
Night
- 1☿︎ Mercury20:06 – 20:54
- 2☽︎ Moon20:54 – 21:41
- 3♄︎ Saturn21:41 – 22:29
- 4♃︎ Jupiter22:29 – 23:17
- 5♂︎ Mars23:17 – 00:04
- 6☉︎ Sun00:04 – 00:52
- 7♀︎ Venus00:52 – 01:39
- 8☿︎ Mercury01:39 – 02:27
- 9☽︎ Moon02:27 – 03:15
- 10♄︎ Saturn03:15 – 04:02
- 11♃︎ Jupiter04:02 – 04:50
- 12♂︎ Mars04:50 – 05:38
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Saturday, 19 December 2026, the Sun rises at 05:37 and sets at 20:06: the day lasts 14h 29m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:38, lasts 9h 31m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Saturn, from 05:37 to 06:49: 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.