Calendar

World Space Week

World Space Week is the largest space event on Earth. More than 8,000 events in 96 countries celebrated “The Moon: Gateway to the Stars” last year. This year the theme […]

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.

Jesuit Book Club Live Gathering

Online

Jesuit Book Club is hosting a Zoom session with Br. Guy Consolmagno, who will shed provocative light on some of the strange places where religion and science meet.

New Moon

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 […]

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 […]

Winter Solstice

The winter solstice, also called the hibernal solstice, occurs when either of Earth's poles reaches its maximum tilt away from the Sun.

Christmas Eve

Christmas Eve is on December 24 and marks the culmination of the Advent period before Christmas that starts on the fourth Sunday before Christmas Eve. Many churches mark the end […]

Official Calendar

2023 Vatican Observatory calendars now available for purchase in our e-store!