what happens if christmas falls on a monday

Christmas can fall on any day of the week, including Mondays. The date of Christmas is determined by the Gregorian calendar, which is a solar calendar that was introduced in 1582 by Pope Gregory XIII. The Gregorian calendar is a 12-month calendar with 365 or 366 days per year, depending on whether it is a leap year or not. The date of Christmas is December 25th, regardless of the day of the week. So, if Christmas falls on a Monday, it's just an ordinary Monday with the added joy and excitement of the Christmas holiday.