Calendar

Full Moon

The Full Moon rises at sunset, and is visible all night. The Vatican Observatory's monthly Full Moon Meetup for Sacred Space Astronomy subscribers is held at 10:00 AM Tucson time.

Our Lady of Guadalupe.

Our Lady of Guadalupe (Spanish: Nuestra Señora de Guadalupe), also known as the Virgin of Guadalupe (Spanish: Virgen de Guadalupe), is a Catholic title of the Blessed Virgin Mary associated with a series of five Marian apparitions in December […]

St. Lucia (Sweden), festival of light.

Saint Lucy's Day, also called Lucia Day or the feast of Saint Lucy, is a Christian feast day observed on 13 December. The observance commemorates Lucia of Syracuse, an early-4th-century virgin martyr under the Diocletianic Persecution, who according to legend brought […]

New Moon 2025

New Moon. By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely […]

Ursids Meteor Shower

The Ursids peak just before Christmas with rates of 5-10 meteors per hour during the late morning hours.

Earth at Perihelion

Earth will be at the closest point in its orbit around the Sun on this date - 91,403,034 miles.