| Valentine's Day - Monday February 14, 2022 cards/flowers : Introduced by Pope Gelasus in 498, perhaps in response to a local Roman tradition of lovers writing their names on an urn in February
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| Winter holiday (beginning) - Friday February 19, 2021 School holidays :
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| General election - Saturday February 20, 2021 Special Events :
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| Winter holiday (end) - Monday March 8, 2021 School holidays : Lycée La Fontaine, Niamey
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| Easter - Sunday April 4, 2021 Catholic or protestant : Not a paid holiday
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| Easter Monday - Monday April 5, 2021 Catholic or protestant : In the year 325, the Council of Nicée determined a date fo Easter. Full Moon would fall the 14th day of a moon month (1). Easter would be marked by the dominical letter(2)and the epactus(3). With the establishment of the equinox ne variatur on March 21, algorithms where elaborated to attribuate a date for Easter whatever the year.
Time between two consecutive new moons: 20 days 12 hours 44 minutes 2.8 - Gives a letter code for the year's calendar Age of the moon on January 1st, minus one unity, 0 being the new moon's age.
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| Start of Ramadan (may be changed to the nearest day) - Tuesday April 13, 2021 cards/flowers :
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| Easter holiday (beginning) - Friday April 23, 2021 School holidays : Lycée La Fontaine, Niamey
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| National Concord Day - Saturday April 24, 2021 Secular holiday : This day was institutionalized on April 24, 1995, a year after the signing of the Ouagadougou Peace Agreement on 9 October 1994 between the government and the Tuareg rebellion, after years of hostilities that marked the northern part of the country.
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| Labor Day/May Day - Saturday May 1, 2021 Secular holiday : Chicago, Saturday May 1st, 1886: 350,000 workers go on strike to call for an 8-hour working day. Industries are paralyzed nationwide. On Monday, as demonstrations go on, the police open fire. On Tuesday, Chicago is again on strike. Following a bomb launched against them, the police shoot again. 12 dead, of which 7 policemen. 8 anarchists will be condemned and executed. In 1889, the Socialist International Movement met in Paris and declared this day international workers' day . The Soviets will follow suit, just as the Nazis. In France, under the Vichy regime (1940-1944), the celebration is renamed Labour Day .
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| Easter holiday (end) - Monday May 10, 2021 School holidays : Lycée La Fontaine, Niamey
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| Nuzul al Qu'ran - Revelation of the Quran (may be changed to the nearest day) - Monday May 10, 2021 Muslim, Sufi :
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| End of Ramadan (may be changed to the nearest day) - Thursday May 13, 2021 Muslim, Sufi : Also called Korité)
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