Nov 25^th 1981 is a Wednesday. What day is Nov 20^th 1994? (1984, 1988, 1992 are leap years.

there are 365 days in one year. 365/7 = 52 + 1/7, so after one year, Nov 25^th 1982 would be Thursday. Nov 25^th 1983 would be Friday. In a leap year, there are 366 days, so 366/7 = 52 + 2/7, so Nov 25th 1984 would be Sunday. Then, we can know Nov 25^th 1985 would be Monday, Nov 25^th 1986 would be Tuesday…Nov 25^th 1994 would be Friday. So Nov 20^th 1994 would be Sunday.