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, 13 May 2026: day of Mercury
- Sunrise
- 07:40
- Sunset
- 18:01
- Next sunrise
- 07:41
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:40 – 08:32
- 2☽︎ Moon08:32 – 09:23
- 3♄︎ Saturn09:23 – 10:15
- 4♃︎ Jupiter10:15 – 11:07
- 5♂︎ Mars11:07 – 11:59
- 6☉︎ Sun11:59 – 12:51
- 7♀︎ Venus12:51 – 13:42
- 8☿︎ Mercury13:42 – 14:34
- 9☽︎ Moon14:34 – 15:26
- 10♄︎ Saturn15:26 – 16:18
- 11♃︎ Jupiter16:18 – 17:10
- 12♂︎ Mars17:10 – 18:01
Night
- 1☉︎ Sun18:01 – 19:10
- 2♀︎ Venus19:10 – 20:18
- 3☿︎ Mercury20:18 – 21:26
- 4☽︎ Moon21:26 – 22:34
- 5♄︎ Saturn22:34 – 23:43
- 6♃︎ Jupiter23:43 – 00:51
- 7♂︎ Mars00:51 – 01:59
- 8☉︎ Sun01:59 – 03:07
- 9♀︎ Venus03:07 – 04:16
- 10☿︎ Mercury04:16 – 05:24
- 11☽︎ Moon05:24 – 06:32
- 12♄︎ Saturn06:32 – 07:41
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 13 May 2026, the Sun rises at 07:40 and sets at 18:01: the day lasts 10h 22m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:41, lasts 13h 39m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mercury, from 07:40 to 08:32: 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.