Linked from

The 29 pages that link to Equinox, each with the reason it gives.

• Gregorian calendarRelated: The reform aimed to keep the calendar’s date of Easter’s spring reference near the March equinox.

• EclipticBroader topic: The ecliptic intersects the celestial equator at the equinoxes.

• HipparchusRelated: The shifting equinoxes supplied the reference for his discovery of precession.

• Tropical yearNarrower topic: An equinox supplies the reference point for defining a seasonal year.

• Axial tiltRelated: Equinoxes mark points in the orbit when tilt produces neither hemisphere's maximum seasonal exposure.

• EquatorRelated: At an equinox, the Sun is directly overhead at the Equator at noon.

• SeasonsBroader topic: Equinoxes fall between the seasonal daylight extremes marked by solstices.

• Celestial equatorRelated: The crossings mark the seasonal points where the Sun changes celestial hemisphere.

• Precession of the equinoxesNarrower topic: Precession is specifically the long-term movement of these points against the stars.

• Earth's axial tiltBroader topic: At an equinox, neither hemisphere is tilted toward the Sun.

• Calendar reformRelated: The Gregorian reform used the spring equinox as a seasonal reference for Easter calculation.

• SunsetBroader topic: Around an equinox, the Sun sets close to due west across much of Earth.

• Ecliptic coordinate systemRelated: The vernal equinox commonly defines zero ecliptic longitude.

• SolsticeCompared with: Equinoxes mark the crossings between the Sun’s northward and southward excursions.

• Aleister CrowleyRelated: Crowley used the journal to document and disseminate his magical system.

• GnomonRelated: At an equinox, a vertical gnomon’s noon shadow aligns with the east–west direction.

• Sidereal yearRelated: Equinox-based timing defines the tropical year, a useful comparison for sidereal timing.

• Solar yearBroader topic: The vernal equinox is a reference point for measuring the seasonal cycle.

• March equinoxNarrower topic: The March event is one member of this twice-yearly astronomical pair.

• TropicsRelated: At the equinoxes, the subsolar point crosses the equator within the tropics.

• September equinoxNarrower topic: The September equinox is the southward one of the two annual crossings.

• Solar calendarRelated: Equinoxes provide astronomical markers for solar calendars and year definitions.

• ZodiacRelated: The March equinox anchors the starting point of the tropical zodiac.

• Winter solsticeCompared with: Unlike a solstice, an equinox occurs when neither hemisphere is tilted most toward the Sun.

• AutumnRelated: The autumnal equinox marks autumn’s astronomical beginning in each hemisphere.

• Spring (season)Related: The March and September equinoxes mark seasonal transitions in each hemisphere.

• Astronomical coordinate systemsRelated: Equatorial coordinates use an equinox to set the zero point of right ascension.

• East (direction)Related: Near an equinox, the Sun rises close to due east at most inhabited latitudes.

• Year (calendar)Related: The vernal equinox provides a seasonal reference for the tropical year.