World Metrology Day.
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 […]
Calendar
12 events found.
Inf. Conjunction of Mercury
Mercury passes very close to the Sun in the sky as its orbit carries it between the Sun and Earth. This happens once in 116 days (the synodic cycle of […]
(New York, NY) Lecture: From Peru to Mars: New Worlds and Jesuit Science
St. Ignatius Church, New York 980 Park Avenue, New York, NY, United StatesPRESENTER Br. Guy Consolmagno, S.J. Director of the Vatican Observatory and President of the Vatican Observatory Foundation Is there a particularly “Jesuit” form of science? From Acosta’s work in the […]
Towel Day
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 […]
Conjunction of the Moon and Venus
The Waning Crescent Moon appears 8° from Venus in the eastern predawn sky.
Conjunction of Mars and Jupiter
Mars and Jupiter appear less than 1° apart in the eastern predawn sky
Memorial Day
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 […]
World Bicycle Day.
In April 2018, the United Nations General Assembly declared June 3 as International World Bicycle Day. The resolution for World Bicycle Day recognizes "the uniqueness, longevity and versatility of the bicycle, which has been in use for two […]
Shavuot begins at sunset
Shavuot (listen (help·info)), or Shavuos (listen (help·info)) in some Ashkenazi usage (Hebrew: שָׁבוּעוֹת, Šāḇūʿōṯ, lit. "Weeks"), commonly known in English as the Feast of Weeks, is a Jewish holiday that occurs on the sixth day of the Hebrew month of Sivan (in the 21st cenutury, it […]
Feast of the Holy Trinity
Feast of the Holy Trinity, also called Trinity Sunday, Christian feast in honour of the Trinity, celebrated in Western liturgical churches on the Sunday following Pentecost (the 50th day after Easter). - britannica.com
Charles Babbage’s paper on the difference engine, 1822
Charles Babbage (1791-1871), computer pioneer, designed two classes of engine, Difference Engines, and Analytical Engines. Difference engines are so called because of the mathematical principle on which they are based, […]