Sidereal time is a measurement of Earth's rotation relative to distant stars. A sidereal day is the time taken for a star to return to the same position in the sky. Solar time differs from sidereal ...

A solar day is defined by the Sun's return to the local meridian, while a sidereal day is defined by the return of the March equinox to the local meridian. A solar day is approximately 3 minutes and ...

Sidereal year: The time necessary for the Earth to make one complete revolution around the sun; 365 days, 6 hours 9 minutes, 9.5 seconds. The calendar year is 365 days, and 366 days every fourth year.

Pop quiz! How long is the average year? If you said “365 days”, then congratulations! You’re wrong. If you said “365.25 days” ...

Get ready for your horoscope to change it’s scope. For centuries, human beings have searched the stars to help them navigate the earth and understand themselves. Ancient Babylonians were among the ...

WATCH COMPLICATIONS EXIST to demonstrate a manufacturer’s prowess. These functions, defined as any display beyond hours, minutes and seconds, can be useful, like multiple time zones or the date, or ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Did you know there’s more than one type of astrology in the world, or that these different types of astrology use completely different time-keeping systems? Western astrology is the “mainstream” type ...