The two most recent years before 2021 in which May 31st was a Monday were 2004 and 2010.
May 31, 1976 was a Monday.
May 31 2010 was a Monday.
It was a Monday.
May 31, 1982 fell on a Monday.
It was a Monday.
Monday.
Monday
May 31, 1965, was a Monday.
in what year does may 1 fall on monday
Memorial Day, originally called Decoration Day when it became a holiday in 1868, was observed on May 30 of every year for 103 years until 1971, no matter which day of the week it was. In 1968 the Uniform Monday Holiday Act was passed by Congress. It took effect in 1971 and Memorial Day was moved from May 30 to the last Monday in May. So it is now possible for Memorial Day to be on a May 31. This happens about once every 5 or 6 years. Periodically there is an 11 year gap between years when Memorial Day is on May 31.
January 31 has fallen on a Monday eleven times since 1940. The years in question are 1944, 1949, 1955, 1966, 1972, 1977, 1983, 1994, 2000, 2005 and 2011.
October 31 last fell on a Monday in 2022. The next occurrence will be in 2033. This pattern follows the typical cycling of days in the calendar, influenced by leap years.