Complex sentence: St. Stephen's Day, for example, is 26 December in the Western Church and 27 December in the Eastern Church.28 December is Childermas/Feast of the Holy Innocents.
Split into simpler sentences: St. Stephen's Day, for example, is December 26 in the Western Church and December 27 in the Eastern Church. December 28 is Childermas/Feast of the Holy Innocents.