Planetary hours
in Tainan.
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, 31 July 2026: day of Venus
- Sunrise
- 05:29
- Sunset
- 18:41
- Next sunrise
- 05:29
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Asia/Taipei).
Day
- 1♀︎ Venus05:29 – 06:35
- 2☿︎ Mercury06:35 – 07:41
- 3☽︎ Moon07:41 – 08:47
- 4♄︎ Saturn08:47 – 09:53
- 5♃︎ Jupiter09:53 – 10:59
- 6♂︎ Mars10:59 – 12:05
- 7☉︎ Sun12:05 – 13:11
- 8♀︎ Venus13:11 – 14:17
- 9☿︎ Mercury14:17 – 15:23
- 10☽︎ Moon15:23 – 16:29
- 11♄︎ Saturn16:29 – 17:35
- 12♃︎ Jupiter17:35 – 18:41
Night
- 1♂︎ Mars18:41 – 19:35
- 2☉︎ Sun19:35 – 20:29
- 3♀︎ Venus20:29 – 21:23
- 4☿︎ Mercury21:23 – 22:17
- 5☽︎ Moon22:17 – 23:11
- 6♄︎ Saturn23:11 – 00:05
- 7♃︎ Jupiter00:05 – 00:59
- 8♂︎ Mars00:59 – 01:53
- 9☉︎ Sun01:53 – 02:47
- 10♀︎ Venus02:47 – 03:41
- 11☿︎ Mercury03:41 – 04:35
- 12☽︎ Moon04:35 – 05:29
Other cities · Taiwan
Questions
How are the planetary hours calculated in Tainan?
On Friday, 31 July 2026, the Sun rises at 05:29 and sets at 18:41: the day lasts 13h 12m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 05:29, lasts 10h 48m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Venus, from 05:29 to 06:35: 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.