= 2 BC, etc.): The northern solstice passed from Leo into Cancer in year −1458, passed into Gemini in year −10, passed into Taurus in December 1989, and is expected to pass into Aries in year 4609. The southern solstice passed from Capricornus into Sagittarius in year −130, is expected to pass into Ophiuchus in year 2269, and is expected to pass into Scorpius in year 3597. On other planets The 687-day orbit of Mars around the Sun (almost twice that of the Earth) causes its summer and winter solstices to occur at approximately 23-month intervals. See also Analemma Geocentric view of the seasons Iranian calendars Perihelion and aphelion Wheel of the Year Zoroastrian calendar References External links Equinoxes and Solstices Calculator (1600 to 2400) Astronomical events of the Solar System Calendars December observances Dynamics of the Solar System June observances Technical factors of astrology Time in astronomy