Orthodox Easter Monday, also called Bright Monday, is the Monday after Orthodox Easter Sunday (Pascha). It is Day 2 of Bright Week, the festive week continuing Easter celebrations, and a moveable spring observance each April to May. In the United States, Greek, Russian, Serbian and other Orthodox groups mark it with church services, family gatherings and feasting. It is not a federal holiday, so offices stay open and markets trade normally, unlike Good Friday, a stock market holiday.