Orthodox calendar 2018

Orthodox calendar (Russian Orthodox Church) with feasts and fasts for years from 1900 to 2099 (perpetual calendar). Works offline.
Beginning of Great Lent - 19.02.2018, Pascha - 08.04.2018, Pentecost - 27.05.2018.
In Android you can download and open the calendar with Firefox.
Select the year: 2017 2019

Notes

  1. How Easter is calculated
  2. Orthodox feasts: immovable and movable
  3. Days of the remembrance of the departed
  4. Orthodox fast

  1. Easter is calculated using Gauss formula. a = [(19 * [Y / 19] + 15) / 30], where Y - year, [] - residue of division;
    b = [(2 * [Y / 4] + 4 * [Y / 7] + 6 * a + 6) / 7];
    If (a + b) > 10 then Easter is (a + b - 9) of April (old calendar) else (22 + a + b) of March (old calendar). Thus the date of Easter can be from 22.03 to 25.04 (old calendar) or from 04.04 to 08.05 (new calendar).

  2. Feasts are set off with red color.
    Immovable feasts:
    07.01 - Nativity of Christ (12 great feasts)
    14.01 - Circumcision of Christ (great feast)
    19.01 - Theophany. Baptism of Christ (12 great feasts)
    15.02 - Presentation of Christ (12 great feasts)
    07.04 - Annunciation (12 great feasts)
    21.05 - John the Theologian
    22.05 - St. Nicolas the Miracle-Worker
    07.07 - Nativity of St. John the Forerunner (great feast)
    12.07 - Apostles Peter and Paul (great feast)
    19.08 - Transfiguration of Jesus Christ (12 great feasts)
    28.08 - Dormition of the Theotokos (12 great feasts)
    11.09 - Beheading of St. John the Forerunner (great feast)
    21.09 - Nativity of the Theotokos (12 great feasts)
    27.09 - Elevation of the Holy Cross (12 great feasts)
    09.10 - John the Theologian
    14.10 - Protection of the Theotokos (great feast)
    04.12 - Presentation of the Theotokos (12 great feasts)
    19.12 - St. Nicolas the Miracle-Worker

    Movable feasts:
    04.02.2018 - Synaxis of new Russian martyrs
    21.01.2018 - Sunday of Zaccheus
    28.01.2018 - Sunday of the Publican and Pharisee
    04.02.2018 - Sunday of the Prodigal Son
    11.02.2018 - Sunday of the Last Judgment
    18.02.2018 - Sunday of Forgiveness. Expulsion of Adam and Eve from Paradise
    25.02.2018 - Sunday of Orthodoxy
    04.03.2018 - Sunday of St. Gregory Palamas
    11.03.2018 - Sunday of the Holy Cross
    18.03.2018 - Sunday of St. John Climacus
    25.03.2018 - Sunday of St. Mary of Egypt
    31.03.2018 - Lazarus Saturday
    01.04.2018 - Palm Sunday (12 great feasts)
    02.04.2018 - Holy Monday
    03.04.2018 - Holy Tuesday
    04.04.2018 - Holy Wednesday
    05.04.2018 - Holy Thursday. Last Supper
    06.04.2018 - Holy Friday. Crucifixion of Christ
    07.04.2018 - Holy Saturday. Christ's descent into Hades
    08.04.2018 - Resurrection of the Lord. Pascha
    15.04.2018 - Sunday of St. Thomas. Antipascha
    22.04.2018 - Sunday of Myrrh-bearing Women
    29.04.2018 - Sunday of the Paralytic
    06.05.2018 - Sunday of the Samaritan Woman
    13.05.2018 - Sunday of the Blind Man
    17.05.2018 - Ascension of Christ (12 great feasts)
    20.05.2018 - Sunday of the Fathers of the First Ecumenical Council
    27.05.2018 - Pentecost (12 great feasts)
    28.05.2018 - Day of the Holy Spirit
    03.06.2018 - Sunday of all Saints
    10.06.2018 - Sunday of all Russian Saints

  3. Days of the remembrance of the departed are set off in back color.
    10.02.2018 - Paternal Saturday
    03.03.2018 - Paternal Saturday
    10.03.2018 - Paternal Saturday
    17.03.2018 - Paternal Saturday
    17.04.2018 - Day of Rejoicing
    26.05.2018 - Paternal Saturday
    09.05 - Remembrance of the departed soldiers
    03.11.2018 - Demetrius (Parental) Saturday

  4. Fast days are set off in background colors.
    19.02.2018 - 07.04.2018 - the Great Lent
    04.06.2018 - 11.07.2018 - the Apostles' Fast
    14.08 - 27.08 - the Dormition Fast
    28.12 - 06.01 - the Nativity Fast

    Meat is excluded
    Fast
    Strict fast