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Hour & Day

The ancient sunrise-to-sunrise clock. Each day is ruled by one planet; each hour within it by another, stepping through the Chaldean order. What you're doing now is happening in one specific hour's atmosphere.

Friday, May 8 · 6am/6pm sunrise/sunset approximation

Current planetary hour
Sun
Day hour 7 of 12 · 12:00 PM – 1:00 PM
Today (Friday) is ruled by ♀ Venus

Today's full sequence

Twelve day hours (sunrise → sunset) and twelve night hours (sunset → next sunrise), each stepping through the Chaldean planetary order. Times shown assume a 6 am / 6 pm anchor — share your location for precise hours.

Day hours

1 Venus 6:00 AM–7:00 AM
2 Mercury 7:00 AM–8:00 AM
3 Moon 8:00 AM–9:00 AM
4 Saturn 9:00 AM–10:00 AM
5 Jupiter 10:00 AM–11:00 AM
6 Mars 11:00 AM–12:00 PM
7 Sun 12:00 PM–1:00 PM
8 Venus 1:00 PM–2:00 PM
9 Mercury 2:00 PM–3:00 PM
10 Moon 3:00 PM–4:00 PM
11 Saturn 4:00 PM–5:00 PM
12 Jupiter 5:00 PM–6:00 PM

Night hours

1 Mars 6:00 PM–7:00 PM
2 Sun 7:00 PM–8:00 PM
3 Venus 8:00 PM–9:00 PM
4 Mercury 9:00 PM–10:00 PM
5 Moon 10:00 PM–11:00 PM
6 Saturn 11:00 PM–12:00 AM
7 Jupiter 12:00 AM–1:00 AM
8 Mars 1:00 AM–2:00 AM
9 Sun 2:00 AM–3:00 AM
10 Venus 3:00 AM–4:00 AM
11 Mercury 4:00 AM–5:00 AM
12 Moon 5:00 AM–6:00 AM

How it works

A planetary day runs from sunrise to sunrise. The day's ruling planet is given by the weekday (Sunday / Sun, Monday / Moon, Tuesday / Mars, and so on). The twelve daylight hours and twelve night hours then step through the Chaldean order — Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon — starting with the day's ruler and cycling continuously.

Hours vary in length: a summer "day hour" is longer than a winter one, because daylight itself is longer. What stays constant is the sequence — the atmosphere of each hour, regardless of its clock-length.