If it's a saint's day it's a church celebration so surely they should decide
Since Easter often falls close to Saint George's Day, the church celebration of the feast may be moved from 23 April: For 2011, 2014 and 2019 the Lutheran, Anglican and Catholic calendars celebrated Saint George's Day on the first available weekday after the Octave of Easter (see Easter Week) (2 May 2011, 28 April 2014 and 29 or 30 April, respectively).[4][5][6] Similarly, the Eastern Orthodox celebration of the feast moves accordingly to the first Monday after Easter or, as it is sometimes called, to the Monday of Bright Week. The church celebration may also be moved if the 23 April falls on a Sunday; in England and Wales the Catholic calendar celebrated Saint George on Monday 24 April 2017 (because Sunday is the celebration of Christ's Resurrection, which is far more important than any saint's commemoration)