M94, by Bernard Miller
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Mar
15
Mon
Lent begins (Julian calendar)
Mar 15 all-day
Mar
25
Thu
Annunciation of the Lord.
Mar 25 all-day
Mar
27
Sat
Passover begins at sundown
Mar 27 all-day
Mar
29
Mon
Holi (Hindu) begins at sunset
Mar 29 all-day

A Holi Festival - Krishna Radha and Gopis.jpg
Holi ( /ˈhl/) is a popular ancient Hindu festival, also known as the “festival of spring”, the “festival of colours”, and the “festival of love”. The festival signifies the triumph of good over evil. It originated and is predominantly celebrated in India, but has also spread to other regions of Asia and parts of the Western world through the diaspora from the Indian subcontinent. – Wikipedia

Jan
1
Sat
New Year’s Day
Jan 1 all-day

The year in the Roman calendar naturally starts on March 1. After all, the words September, October, November, and December literally mean Seventh Month, Eighth Month, Ninth Month, and Tenth Month, respectively.

Keeping track of the passage of years was primarily the concern of those keeping historical records. Ordinary people were not particularly concerned with long-scale time reckoning. In many ancient cultures historical events were dated in regnal years, i.e., using a time reckoning system starting with the anniversary of a sovereign’s accession or coronation. Under this system, the first day of the new year is the anniversary of the king’s or pope’s accession, i.e., the new year’s day would change with every new ruler.

In most cultures, new year’s day was not a cause for celebration for its own sake. People may have celebrated the anniversary of the king’s ascension or some religious feast, and the fact that these were used in time reckoning as dividing points between two consecutive years was quite secondary. In medieval Europe, March 25 (the Annunciation) was probably the most widespread new year’s day but the practice was far from universal. For instance, Rome used December 25 while Florence used March 25.

January 1 became new year’s day gradually from the 14th to the beginning of the 19th century.

Jan
17
Mon
Martin Luther King Jr. Day.
Jan 17 all-day

Portrait of Martin Luther King Jr. Credit: Nobel Foundation

“Martin Luther King Jr. (January 15, 1929 – April 4, 1968) was an American Baptist minister and activist who became the most visible spokesperson and leader in the civil rights movement from 1955 until his assassination in 1968. Born in Atlanta, King is best known for advancing civil rights through nonviolence and civil disobedience, tactics his Christian beliefs and the nonviolent activism of Mahatma Gandhi helped inspire.” – Wikipedia

Feb
2
Wed
Presentation of the Lord (Candlemas).
Feb 2 all-day

A tapestry from Strasbourg depicting the Purification of the Virgin Mary and the Presentation of Jesus at the Temple.

Candlemas (also spelled Candlemass), also known as the Feast of the Presentation of Jesus Christ and the Feast of the Purification of the Blessed Virgin Mary, is a Christian Holy Day commemorating the presentation of Jesus at the Temple. It is based upon the account of the presentation of Jesus in Luke 2:22–40. In accordance with Leviticus 12: a woman was to be purified by presenting lamb as a burnt offering, and either a young pigeon or dove as sin offering, 33 days after a boy’s circumcision. It falls on February 2, which is traditionally the 40th day of the ChristmasEpiphany season. – Wikipedia

 

Feb
11
Fri
International Day of Women and Girls in Science.
Feb 11 all-day

Illustration of Vera Rubin from a series of illustrations for the International Day of Women and Girls in Science. Credit: BEATRIZ ARRIBAS DE FRUTOS.

A significant gender gap has persisted throughout the years at all levels of science, technology, engineering and mathematics (STEM) disciplines all over the world. Even though women have made tremendous progresses towards increasing their participation in higher education, they are still underrepresented in these fields.

Gender equality has always been a core issue for the United Nations. Gender equality and the empowerment of women and girls will make a crucial contribution not only to economic development of the world, but to progress across all the goals and targets of the 2030 Agenda for Sustainable Development as well.

On 14 March 2011, the Commission on the Status of Women adopted a report at its fifty-fifth session, with agreed conclusions on access and participation of women and girls in education, training and science and technology, and for the promotion of women’s equal access to full employment and decent work. On 20 December 2013, the General Assembly adopted a resolution on science, technology and innovation for development, in which it recognized that full and equal access to and participation in science, technology and innovation for women and girls of all ages is imperative for achieving gender equality and the empowerment of women and girls.

On 22 December 2015, the General Assembly adopted a resolution to establish an annual International Day to recognize the critical role women and girls play in science and technology communities. In welcoming the efforts of the United Nations Educational, Scientific and Cultural Organization (UNESCO), the United Nations Entity for Gender Equality and the Empowerment of Women (UN-Women), the International Telecommunication Union (ITU) and other relevant organizations that support and promote the access of women and girls and their participation in science, technology, engineering and mathematics education, training and research activities at all levels decided to proclaim 11 February of each year the International Day of Women and Girls in Science.
Source: https://www.un.org/en/events/women-and-girls-in-science-day/background.shtml

Read More:
https://www.un.org/en/events/women-and-girls-in-science-day/
https://www.iau-100.org/women-and-girls-in-astronomy-day