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 Wednesday, 28 October 2026: day of Mercury
- Sunrise
- 06:10
- Sunset
- 17:51
- Next sunrise
- 06:11
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Asia/Bangkok).
Day
- 1☿︎ Mercury06:10 – 07:09
- 2☽︎ Moon07:09 – 08:07
- 3♄︎ Saturn08:07 – 09:05
- 4♃︎ Jupiter09:05 – 10:04
- 5♂︎ Mars10:04 – 11:02
- 6☉︎ Sun11:02 – 12:01
- 7♀︎ Venus12:01 – 12:59
- 8☿︎ Mercury12:59 – 13:57
- 9☽︎ Moon13:57 – 14:56
- 10♄︎ Saturn14:56 – 15:54
- 11♃︎ Jupiter15:54 – 16:53
- 12♂︎ Mars16:53 – 17:51
Night
- 1☉︎ Sun17:51 – 18:53
- 2♀︎ Venus18:53 – 19:54
- 3☿︎ Mercury19:54 – 20:56
- 4☽︎ Moon20:56 – 21:57
- 5♄︎ Saturn21:57 – 22:59
- 6♃︎ Jupiter22:59 – 00:01
- 7♂︎ Mars00:01 – 01:02
- 8☉︎ Sun01:02 – 02:04
- 9♀︎ Venus02:04 – 03:06
- 10☿︎ Mercury03:06 – 04:07
- 11☽︎ Moon04:07 – 05:09
- 12♄︎ Saturn05:09 – 06:11
Other cities · Thailand
Questions
How are the planetary hours calculated in Sai Mai?
On Wednesday, 28 October 2026, the Sun rises at 06:10 and sets at 17:51: the day lasts 11h 41m, that is twelve day hours of 58 min. The night, until the next sunrise at 06:11, lasts 12h 20m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Mercury, from 06:10 to 07:09: 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.