Octave of Easter disciples, with Thomas the Apostle present, on the Sunday following his resurrection. A traditional name in English is Low Sunday, perhaps given this name because of the contrast with the high festival of Easter on the preceding Sunday, or the word "Low" may be a corruption of Latin "Laudes", the first word of a sequence in use in the Sarum Rite. Another name is Quasimodo Sunday, from the first words of the introit in Latin. Easter Week was known as "ebdomada alba" (white week) or "in albis" (in white), because of the white robes that those who had been baptized
Reform of the date of Easter fixed on either the second or third Sunday of April relative to the Gregorian calendar. This proposal remains to be approved, especially by Eastern churches which currently determine Easter using the Julian calendar. According to international standards, Easter Sunday ends the week containing Good Friday and the week of the second Sunday in April has the ordinal number 14 or 15 (dominical letters D/DC, E/ED, F/FE and GF, i.e. 46.25% of years), hence the third Sunday is one respective week later. There currently is no public proposal under discussion that used a fixed week of the year for Easter and