Planetary hours
in Sai Mai.
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 Thursday, 30 July 2026: day of Jupiter
- Sunrise
- 06:01
- Sunset
- 18:46
- Next sunrise
- 06:01
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Asia/Bangkok).
Day
- 1♃︎ Jupiter06:01 – 07:04
- 2♂︎ Mars07:04 – 08:08
- 3☉︎ Sun08:08 – 09:12
- 4♀︎ Venus09:12 – 10:16
- 5☿︎ Mercury10:16 – 11:20
- 6☽︎ Moon11:20 – 12:23
- 7♄︎ Saturn12:23 – 13:27
- 8♃︎ Jupiter13:27 – 14:31
- 9♂︎ Mars14:31 – 15:35
- 10☉︎ Sun15:35 – 16:38
- 11♀︎ Venus16:38 – 17:42
- 12☿︎ Mercury17:42 – 18:46
Night
- 1☽︎ Moon18:46 – 19:42
- 2♄︎ Saturn19:42 – 20:38
- 3♃︎ Jupiter20:38 – 21:35
- 4♂︎ Mars21:35 – 22:31
- 5☉︎ Sun22:31 – 23:27
- 6♀︎ Venus23:27 – 00:23
- 7☿︎ Mercury00:23 – 01:20
- 8☽︎ Moon01:20 – 02:16
- 9♄︎ Saturn02:16 – 03:12
- 10♃︎ Jupiter03:12 – 04:08
- 11♂︎ Mars04:08 – 05:05
- 12☉︎ Sun05:05 – 06:01
Other cities · Thailand
Questions
How are the planetary hours calculated in Sai Mai?
On Thursday, 30 July 2026, the Sun rises at 06:01 and sets at 18:46: the day lasts 12h 45m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:01, lasts 11h 15m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Jupiter, from 06:01 to 07:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.