The Observatory · Interactive

The Sky Clock: cycles within cycles

A real natal-chart wheel, computed live. Move the time and the date, pick a place on Earth, and watch the rising sign, the Sun and the Moon keep the rhythm of the day, the month and the seasons.

Place on Earth
Watch it move
Sun
Rising sign
Moon
Sun's house · whole sign
Daylight
Season here

How long each sign takes to rise here

Positions computed with astronomy-engine and checked against the Swiss Ephemeris (within 0.01°). Sunrise and sunset here mean the moment the Sun's centre is on the horizon; the times in weather apps are a few minutes earlier, because they count the Sun's top edge and the bending of light near the horizon. Time is local mean sun time, so 12:00 is close to the moment the Sun is highest.