It falls on a Thursday
March 15 1990 was a Thursday.
March 15 1957 was a Friday.
March 15 1985 was on a Friday.
Sunday
March 15, 1986, was a Saturday.
Monday
March 15, 1961, was a Wednesday.
March 15, 1987, fell on a Sunday.
March 15 2005 was a Tuesday.
The next time the 15th of March will fall on a Monday will be in 2021.
March 15 1983 was a Tuesday.
March 15, 1976, was a Monday.