User:Billrandle/Books/Time

How long is a Day?

 * Sidereal time
 * Solar time
 * Axial precession
 * Geodesy
 * Right ascension
 * Declination
 * Tropical year
 * Earth's rotation
 * Month
 * Synodic day
 * Anti-sidereal time
 * Nocturnal (instrument)
 * Transit instrument
 * Sun
 * Earth
 * Equinox
 * Ecliptic
 * Star
 * Moon
 * Precession
 * Celestial equator
 * Equator
 * Latitude
 * Celestial sphere
 * Longitude
 * Planet
 * Solar System
 * Time
 * Calendar
 * Lunar calendar
 * Lunar month
 * Intercalation (timekeeping)
 * Lunisolar calendar
 * Solar calendar
 * Solstice
 * Gregorian calendar