Easter related Holidays for the year 2020
The date of Easter Day was defined by the Council of Nicaea in AD325 as the Sunday after the first full moon which falls on or after the Spring Equinox. The Equinox is assumed to always fall on 21st March, so the calculation reduces to determining the date of the full moon and the date of the following Sunday. The algorithm used here was introduced around the year 532 by Dionysius Exiguus. Under the Julian Calendar (for years before 1753) a simple 19-year cycle is used to track the phases of the Moon. Under the Gregorian Calendar (for years after 1753 - devised by Clavius and Lilius, and introduced by Pope Gregory XIII in October 1582, and into Britain and its then colonies in September 1752) two correction factors are added to make the cycle more accurate.
Easter Sunday 
Sun April 12 2020
Septuagesima Sun February 09 2020
Sexagesima Sun February 16 2020
Quinquagesima Sun February 23 2020
Shrove Tuesday (Mardi Gras) Tue February 25 2020
Ash Wednesday Wed February 26 2020
Palm Sunday Sun April 05 2020
Good Friday Fri April 10 2020
Rogation Sunday Sun May 17 2020
Ascension Thu May 21 2020
Pentecost Sun May 31 2020
Trinity Sunday Sun June 07 2020
Corpus Christi Thu June 11 2020
Christmas related Holidays for the year 2020
First Sunday of Advent Sunday November 29 2020
Second Sunday of Advent Sunday December 06 2020
Third Sunday of Advent Sunday December 13 2020
Forth Sunday of Advent Sunday December 20 2020
Christmas Eve Thursday December 24 2020
Epiphany Wednesday January 06 2021
Miami Catholic Calendars 
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