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, 23 December 2026: day of Mercury
- Sunrise
- 05:39
- Sunset
- 20:08
- Next sunrise
- 05:40
A day hour lasts 1h 12m; a night hour, 48 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:39 – 06:51
- 2☽︎ Moon06:51 – 08:04
- 3♄︎ Saturn08:04 – 09:16
- 4♃︎ Jupiter09:16 – 10:29
- 5♂︎ Mars10:29 – 11:41
- 6☉︎ Sun11:41 – 12:54
- 7♀︎ Venus12:54 – 14:06
- 8☿︎ Mercury14:06 – 15:18
- 9☽︎ Moon15:18 – 16:31
- 10♄︎ Saturn16:31 – 17:43
- 11♃︎ Jupiter17:43 – 18:56
- 12♂︎ Mars18:56 – 20:08
Night
- 1☉︎ Sun20:08 – 20:56
- 2♀︎ Venus20:56 – 21:43
- 3☿︎ Mercury21:43 – 22:31
- 4☽︎ Moon22:31 – 23:19
- 5♄︎ Saturn23:19 – 00:06
- 6♃︎ Jupiter00:06 – 00:54
- 7♂︎ Mars00:54 – 01:41
- 8☉︎ Sun01:41 – 02:29
- 9♀︎ Venus02:29 – 03:17
- 10☿︎ Mercury03:17 – 04:04
- 11☽︎ Moon04:04 – 04:52
- 12♄︎ Saturn04:52 – 05:40
Other cities · Argentina
Questions
How are the planetary hours calculated in Merlo?
On Wednesday, 23 December 2026, the Sun rises at 05:39 and sets at 20:08: the day lasts 14h 29m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:40, lasts 9h 31m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 05:39 to 06:51: 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.