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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 05:37
- Sunset
- 20:25
- Next sunrise
- 05:37
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:37 – 06:51
- 2☽︎ Moon06:51 – 08:05
- 3♄︎ Saturn08:05 – 09:19
- 4♃︎ Jupiter09:19 – 10:33
- 5♂︎ Mars10:33 – 11:47
- 6☉︎ Sun11:47 – 13:01
- 7♀︎ Venus13:01 – 14:15
- 8☿︎ Mercury14:15 – 15:29
- 9☽︎ Moon15:29 – 16:43
- 10♄︎ Saturn16:43 – 17:57
- 11♃︎ Jupiter17:57 – 19:11
- 12♂︎ Mars19:11 – 20:25
Night
- 1☉︎ Sun20:25 – 21:11
- 2♀︎ Venus21:11 – 21:57
- 3☿︎ Mercury21:57 – 22:43
- 4☽︎ Moon22:43 – 23:29
- 5♄︎ Saturn23:29 – 00:15
- 6♃︎ Jupiter00:15 – 01:01
- 7♂︎ Mars01:01 – 01:47
- 8☉︎ Sun01:47 – 02:33
- 9♀︎ Venus02:33 – 03:19
- 10☿︎ Mercury03:19 – 04:05
- 11☽︎ Moon04:05 – 04:51
- 12♄︎ Saturn04:51 – 05:37
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Wednesday, 9 December 2026, the Sun rises at 05:37 and sets at 20:25: the day lasts 14h 48m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:37, lasts 9h 12m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mercury, 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: 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.