International Chernobyl Disaster Remembrance Day
An explosion at the Chernobyl Nuclear Power Plant in 1986 spread a radioactive cloud over large parts of the Soviet Union; millions of people in the three countries were exposed to the radiation.
Calendar
13 events found.
Events
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World Day for Safety and Health at Work
The World Day for Safety and Health at Work will focus on addressing the outbreak of infectious diseases at work, in particular, on the COVID-19 pandemic.
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VOF Moonth-ly Meetup with Fr. Giovanni Batista Riccioli, SJ
Join us on April 1st for our next Full Moon-th On-line Meetup with Giovanni Battista Riccioli
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Cinco de Mayo
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 positive contributions that they make to society. It was established by Anna Jarvis, with the first official Mother's Day celebrated through a service of worship at St. Andrew's Methodist […]
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Mother’s Day (USA)
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 positive contributions that they make to society. It was established by Anna Jarvis, with the first official Mother's Day celebrated through a service of worship at St. Andrew's Methodist […]
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Ascension
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 Bible.
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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 in shadow then. Pictured here is the traditional New Moon, the earliest visible waxing crescent, which signals the start of a new month in many […]
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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 collaboration in the science of measurement and in its industrial, commercial and societal applications. The original aim of the Metre Convention - the world-wide uniformity […]
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First Quarter Moon 2026
The Moon is at First quarter on this date -it will be visible high in the southern sky in early evening.
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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 in his honor. Towel Day 2021 marks the 43rd anniversary of the first BBC broadcast of The Hitchhiker’s Guide to the Galaxy (1978).
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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.
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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 […]
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Last Quarter Moon 2026
The Moon is at Last Quarter (or Third Quarter) – rising around midnight, and visible to the south after sunrise.