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, 16 September 2026: day of Mercury
- Sunrise
- 06:52
- Sunset
- 18:47
- Next sunrise
- 06:51
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury06:52 – 07:52
- 2☽︎ Moon07:52 – 08:51
- 3♄︎ Saturn08:51 – 09:51
- 4♃︎ Jupiter09:51 – 10:50
- 5♂︎ Mars10:50 – 11:50
- 6☉︎ Sun11:50 – 12:49
- 7♀︎ Venus12:49 – 13:49
- 8☿︎ Mercury13:49 – 14:49
- 9☽︎ Moon14:49 – 15:48
- 10♄︎ Saturn15:48 – 16:48
- 11♃︎ Jupiter16:48 – 17:47
- 12♂︎ Mars17:47 – 18:47
Night
- 1☉︎ Sun18:47 – 19:47
- 2♀︎ Venus19:47 – 20:47
- 3☿︎ Mercury20:47 – 21:48
- 4☽︎ Moon21:48 – 22:48
- 5♄︎ Saturn22:48 – 23:48
- 6♃︎ Jupiter23:48 – 00:49
- 7♂︎ Mars00:49 – 01:49
- 8☉︎ Sun01:49 – 02:49
- 9♀︎ Venus02:49 – 03:50
- 10☿︎ Mercury03:50 – 04:50
- 11☽︎ Moon04:50 – 05:51
- 12♄︎ Saturn05:51 – 06:51
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 16 September 2026, the Sun rises at 06:52 and sets at 18:47: the day lasts 11h 54m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 06:51, lasts 12h 04m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Mercury, from 06:52 to 07:52: 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.