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, 16 December 2026: day of Mercury
- Sunrise
- 05:38
- Sunset
- 20:30
- Next sunrise
- 05:39
A day hour lasts 1h 14m; a night hour, 46 min. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury05:38 – 06:53
- 2☽︎ Moon06:53 – 08:07
- 3♄︎ Saturn08:07 – 09:21
- 4♃︎ Jupiter09:21 – 10:36
- 5♂︎ Mars10:36 – 11:50
- 6☉︎ Sun11:50 – 13:04
- 7♀︎ Venus13:04 – 14:19
- 8☿︎ Mercury14:19 – 15:33
- 9☽︎ Moon15:33 – 16:47
- 10♄︎ Saturn16:47 – 18:02
- 11♃︎ Jupiter18:02 – 19:16
- 12♂︎ Mars19:16 – 20:30
Night
- 1☉︎ Sun20:30 – 21:16
- 2♀︎ Venus21:16 – 22:02
- 3☿︎ Mercury22:02 – 22:47
- 4☽︎ Moon22:47 – 23:33
- 5♄︎ Saturn23:33 – 00:19
- 6♃︎ Jupiter00:19 – 01:04
- 7♂︎ Mars01:04 – 01:50
- 8☉︎ Sun01:50 – 02:36
- 9♀︎ Venus02:36 – 03:22
- 10☿︎ Mercury03:22 – 04:07
- 11☽︎ Moon04:07 – 04:53
- 12♄︎ Saturn04:53 – 05:39
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Wednesday, 16 December 2026, the Sun rises at 05:38 and sets at 20:30: the day lasts 14h 52m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:39, lasts 9h 08m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mercury, from 05:38 to 06:53: 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.