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Gregorian calendar

From Wikimedia Commons, the free media repository
Deutsch: GregorianischerKalender, Gregorianische Kalender
English: TheGregoriancalendar is the most widely usedcalendar in the world today. It was first proposed by theCalabrian doctorAloysius Lilius, and decreed byPope Gregory XIII, after whom it was named, onFebruary 24,1582 bypapal bullw:Inter gravissimas. It is a reform of theJulian calendar.
  • Português: Rosto da Bula papal "Inter Gravissimas" de Gregório XIII estabelecendo a Reforma do Calendário Gregoriano. English: The first page of the papal bull "Inter Gravissimas" by which Pope Gregory XIII introduced his calendar.
    Português: Rosto da Bula papal "Inter Gravissimas" de Gregório XIII estabelecendo a Reforma do Calendário Gregoriano.
    English: The first page of the papal bull "Inter Gravissimas" by which Pope Gregory XIII introduced his calendar.
  • Seasonal error of Gregorian calendar
    Seasonal error of Gregorian calendar
  • English: An Election Entertainment - includes famous "Give us our Eleven Days" protest slogan against the Gregorian calendar at lower right (on black banner on floor under foot).
    English:An Election Entertainment - includes famous "Give us our Eleven Days" protest slogan against theGregorian calendar at lower right (on black banner on floor under foot).
  • Deutsch: 400 Jahre Gregorianischer Kalender) English: Stamp, four hundred years of the Gregorian Calendar
    Deutsch: 400 Jahre Gregorianischer Kalender)
    English: Stamp, four hundred years of the Gregorian Calendar
  • English: Comparing two different definitions of the tropical year (from spring equinox to spring equinox, and time needed by the mean sun for 360° on the ecliptic) with the length of the Gregorian calendar year, allowing for the slowing-down of the Earth's rotation.
    English: Comparing two different definitions of the tropical year (from spring equinox to spring equinox, and time needed by the mean sun for 360° on the ecliptic) with the length of the Gregorian calendar year, allowing for the slowing-down of the Earth's rotation.
  • English: The date of the northern summer solstice between 1750 and 2250
    English: The date of the northern summer solstice between 1750 and 2250
  • Look up day of week for any Gregorian date
    Look up day of week for any Gregorian date
  • Deutsch: Ewiger Gregorianischer Kalender ab dem 15. Oktober 1582
    Deutsch: Ewiger Gregorianischer Kalender ab dem 15. Oktober 1582
  • In September 1752, Britain changed from Old Style (O.S.) to New Style (N.S.)
    In September 1752, Britain changed fromOld Style (O.S.) to New Style (N.S.)
  • This is what common calendars look like today, often with an image or picture representing the month.
    This is what common calendars look like today, often with an image or picture representing the month.
Retrieved from "https://commons.wikimedia.org/w/index.php?title=Gregorian_calendar&oldid=918131139"
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