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 Monday, 4 May 2026: day of the Moon
- Sunrise
- 07:33
- Sunset
- 18:09
- Next sunrise
- 07:34
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☽︎ Moon07:33 – 08:26
- 2♄︎ Saturn08:26 – 09:19
- 3♃︎ Jupiter09:19 – 10:12
- 4♂︎ Mars10:12 – 11:05
- 5☉︎ Sun11:05 – 11:58
- 6♀︎ Venus11:58 – 12:51
- 7☿︎ Mercury12:51 – 13:44
- 8☽︎ Moon13:44 – 14:37
- 9♄︎ Saturn14:37 – 15:30
- 10♃︎ Jupiter15:30 – 16:23
- 11♂︎ Mars16:23 – 17:16
- 12☉︎ Sun17:16 – 18:09
Night
- 1♀︎ Venus18:09 – 19:16
- 2☿︎ Mercury19:16 – 20:23
- 3☽︎ Moon20:23 – 21:30
- 4♄︎ Saturn21:30 – 22:37
- 5♃︎ Jupiter22:37 – 23:44
- 6♂︎ Mars23:44 – 00:51
- 7☉︎ Sun00:51 – 01:58
- 8♀︎ Venus01:58 – 03:05
- 9☿︎ Mercury03:05 – 04:12
- 10☽︎ Moon04:12 – 05:20
- 11♄︎ Saturn05:20 – 06:27
- 12♃︎ Jupiter06:27 – 07:34
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Monday, 4 May 2026, the Sun rises at 07:33 and sets at 18:09: the day lasts 10h 36m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:34, lasts 13h 24m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
The Moon, from 07:33 to 08:26: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.