Mars at Perihelion
On this day, Mars it closest to the Sun in its orbit.
On this day, Mars it closest to the Sun in its orbit.
The Ascension Day of Jesus Christ always falls on a Thursday - it is the day when Christians celebrate the ascension of Jesus Christ into heaven as recorded in the […]
Mercury will reach its greatest separation from the Sun on this date.
Mother's Day in the United States is an annual holiday celebrated on the second Sunday in May. Mother's Day recognizes mothers, motherhood and maternal bonds in general, as well as the […]
Uranus will pass close to the Sun in the sky as its orbit carries it around the far side of the solar system from the Earth.
World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations. The Convention set the framework for global […]
Towel Day is an annual celebration on the 25th of May, as a tribute to the late author Douglas Adams (1952-2001). On that day, fans around the universe carry a towel […]
Memorial Day is an American holiday, observed on the last Monday of May, honoring the men and women who died while serving in the U.S. military. Memorial Day 2021 will […]
Earth will be at the farthest point in its orbit around the Sun on this date
Mercury will appear close to the crescent Moon in the west-northwestern sky before sunset.
Join VOF emeritus Board member James Renn for a discussion about the history of the Vatican Observatory at the Franciscan Renewal Center (The Casa)
At the invitation of the Holy Father Pope Francis, ”Rome, Saint John Lateran, 11 February 2022, Memorial of the Blessed Virgin Mary of Lourdes” we call upon the Confraternities of […]