Planetary hours
in Fortaleza.
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 Tuesday, 16 December 2025: day of Mars
- Sunrise
- 05:19
- Sunset
- 17:40
- Next sunrise
- 05:20
A day hour lasts 1h 02m; a night hour, 58 min. Local time (America/Fortaleza).
Day
- 1♂︎ Mars05:19 – 06:21
- 2☉︎ Sun06:21 – 07:23
- 3♀︎ Venus07:23 – 08:24
- 4☿︎ Mercury08:24 – 09:26
- 5☽︎ Moon09:26 – 10:28
- 6♄︎ Saturn10:28 – 11:29
- 7♃︎ Jupiter11:29 – 12:31
- 8♂︎ Mars12:31 – 13:33
- 9☉︎ Sun13:33 – 14:35
- 10♀︎ Venus14:35 – 15:36
- 11☿︎ Mercury15:36 – 16:38
- 12☽︎ Moon16:38 – 17:40
Night
- 1♄︎ Saturn17:40 – 18:38
- 2♃︎ Jupiter18:38 – 19:36
- 3♂︎ Mars19:36 – 20:35
- 4☉︎ Sun20:35 – 21:33
- 5♀︎ Venus21:33 – 22:31
- 6☿︎ Mercury22:31 – 23:30
- 7☽︎ Moon23:30 – 00:28
- 8♄︎ Saturn00:28 – 01:26
- 9♃︎ Jupiter01:26 – 02:25
- 10♂︎ Mars02:25 – 03:23
- 11☉︎ Sun03:23 – 04:21
- 12♀︎ Venus04:21 – 05:20
Other cities · Brazil
Questions
How are the planetary hours calculated in Fortaleza?
On Tuesday, 16 December 2025, the Sun rises at 05:19 and sets at 17:40: the day lasts 12h 20m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 05:20, lasts 11h 40m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mars, from 05:19 to 06:21: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.