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, 29 July 2026: day of Mercury
- Sunrise
- 07:51
- Sunset
- 18:12
- Next sunrise
- 07:50
A day hour lasts 52 min; a night hour, 1h 08m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:51 – 08:42
- 2☽︎ Moon08:42 – 09:34
- 3♄︎ Saturn09:34 – 10:26
- 4♃︎ Jupiter10:26 – 11:18
- 5♂︎ Mars11:18 – 12:09
- 6☉︎ Sun12:09 – 13:01
- 7♀︎ Venus13:01 – 13:53
- 8☿︎ Mercury13:53 – 14:45
- 9☽︎ Moon14:45 – 15:36
- 10♄︎ Saturn15:36 – 16:28
- 11♃︎ Jupiter16:28 – 17:20
- 12♂︎ Mars17:20 – 18:12
Night
- 1☉︎ Sun18:12 – 19:20
- 2♀︎ Venus19:20 – 20:28
- 3☿︎ Mercury20:28 – 21:36
- 4☽︎ Moon21:36 – 22:44
- 5♄︎ Saturn22:44 – 23:52
- 6♃︎ Jupiter23:52 – 01:01
- 7♂︎ Mars01:01 – 02:09
- 8☉︎ Sun02:09 – 03:17
- 9♀︎ Venus03:17 – 04:25
- 10☿︎ Mercury04:25 – 05:33
- 11☽︎ Moon05:33 – 06:42
- 12♄︎ Saturn06:42 – 07:50
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 29 July 2026, the Sun rises at 07:51 and sets at 18:12: the day lasts 10h 21m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:50, lasts 13h 38m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mercury, from 07:51 to 08:42: 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.