Planetary hours
in Bahía Blanca.
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 Friday, 4 December 2026: day of Venus
- Sunrise
- 05:37
- Sunset
- 20:21
- Next sunrise
- 05:37
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus05:37 – 06:51
- 2☿︎ Mercury06:51 – 08:04
- 3☽︎ Moon08:04 – 09:18
- 4♄︎ Saturn09:18 – 10:32
- 5♃︎ Jupiter10:32 – 11:45
- 6♂︎ Mars11:45 – 12:59
- 7☉︎ Sun12:59 – 14:13
- 8♀︎ Venus14:13 – 15:26
- 9☿︎ Mercury15:26 – 16:40
- 10☽︎ Moon16:40 – 17:54
- 11♄︎ Saturn17:54 – 19:07
- 12♃︎ Jupiter19:07 – 20:21
Night
- 1♂︎ Mars20:21 – 21:07
- 2☉︎ Sun21:07 – 21:53
- 3♀︎ Venus21:53 – 22:40
- 4☿︎ Mercury22:40 – 23:26
- 5☽︎ Moon23:26 – 00:13
- 6♄︎ Saturn00:13 – 00:59
- 7♃︎ Jupiter00:59 – 01:45
- 8♂︎ Mars01:45 – 02:32
- 9☉︎ Sun02:32 – 03:18
- 10♀︎ Venus03:18 – 04:04
- 11☿︎ Mercury04:04 – 04:51
- 12☽︎ Moon04:51 – 05:37
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Friday, 4 December 2026, the Sun rises at 05:37 and sets at 20:21: the day lasts 14h 44m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:37, lasts 9h 16m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Venus, from 05:37 to 06:51: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.