Orthodox calendar 2010

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:
   07.02.2010 - Synaxis of new Russian martyrs
   17.01.2010 - Sunday of Zaccheus
   24.01.2010 - Sunday of the Publican and Pharisee
   31.01.2010 - Sunday of the Prodigal Son
   07.02.2010 - Sunday of the Last Judgment
   14.02.2010 - Sunday of Forgiveness. Expulsion of Adam and Eve from Paradise
   21.02.2010 - Sunday of Orthodoxy
   28.02.2010 - Sunday of St. Gregory Palamas
   07.03.2010 - Sunday of the Holy Cross
   14.03.2010 - Sunday of St. John Climacus
   21.03.2010 - Sunday of St. Mary of Egypt
   27.03.2010 - Lazarus Saturday
   28.03.2010 - Palm Sunday (12 great feasts)
   29.03.2010 - Holy Monday
   30.03.2010 - Holy Tuesday
   31.03.2010 - Holy Wednesday
   01.04.2010 - Holy Thursday. Last Supper
   02.04.2010 - Holy Friday. Crucifixion of Christ
   03.04.2010 - Holy Saturday. Christ's descent into Hades
   04.04.2010 - Resurrection of the Lord. Pascha
   11.04.2010 - Sunday of St. Thomas. Antipascha
   18.04.2010 - Sunday of Myrrh-bearing Women
   25.04.2010 - Sunday of the Paralytic
   02.05.2010 - Sunday of the Samaritan Woman
   09.05.2010 - Sunday of the Blind Man
   13.05.2010 - Ascension of Christ (12 great feasts)
   16.05.2010 - Sunday of the Fathers of the First Ecumenical Council
   23.05.2010 - Pentecost (12 great feasts)
   24.05.2010 - Day of the Holy Spirit
   30.05.2010 - Sunday of all Saints
   06.06.2010 - Sunday of all Russian Saints
   
   
3. Days of the remembrance of the departed are set off in back color.
   06.02.2010 - Paternal Saturday
   27.02.2010 - Paternal Saturday
   06.03.2010 - Paternal Saturday
   13.03.2010 - Paternal Saturday
   13.04.2010 - Day of Rejoicing
   22.05.2010 - Paternal Saturday
   09.05 - Remembrance of the departed soldiers
   06.11.2010 - Demetrius (Parental) Saturday
   
   
4. Fast days are set off in background colors.
   15.02.2010 - 03.04.2010 - the Great Lent
   31.05.2010 - 11.07.2010 - the Apostles' Fast
   14.08 - 27.08 - the Dormition Fast
   28.12 - 06.01 - the Nativity Fast
   
   

   Meat is excluded

   Fast

   Strict fast