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 Tuesday, 20 October 2026: day of Mars
- Sunrise
- 06:06
- Sunset
- 19:13
- Next sunrise
- 06:05
A day hour lasts 1h 06m; a night hour, 54 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♂︎ Mars06:06 – 07:11
- 2☉︎ Sun07:11 – 08:17
- 3♀︎ Venus08:17 – 09:23
- 4☿︎ Mercury09:23 – 10:28
- 5☽︎ Moon10:28 – 11:34
- 6♄︎ Saturn11:34 – 12:39
- 7♃︎ Jupiter12:39 – 13:45
- 8♂︎ Mars13:45 – 14:51
- 9☉︎ Sun14:51 – 15:56
- 10♀︎ Venus15:56 – 17:02
- 11☿︎ Mercury17:02 – 18:07
- 12☽︎ Moon18:07 – 19:13
Night
- 1♄︎ Saturn19:13 – 20:07
- 2♃︎ Jupiter20:07 – 21:02
- 3♂︎ Mars21:02 – 21:56
- 4☉︎ Sun21:56 – 22:50
- 5♀︎ Venus22:50 – 23:45
- 6☿︎ Mercury23:45 – 00:39
- 7☽︎ Moon00:39 – 01:33
- 8♄︎ Saturn01:33 – 02:27
- 9♃︎ Jupiter02:27 – 03:22
- 10♂︎ Mars03:22 – 04:16
- 11☉︎ Sun04:16 – 05:10
- 12♀︎ Venus05:10 – 06:05
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Tuesday, 20 October 2026, the Sun rises at 06:06 and sets at 19:13: the day lasts 13h 07m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 06:05, lasts 10h 52m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mars, from 06:06 to 07:11: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.