Monday.
November 5th, 1980 was a Wednesday.
15 May 1980 was a Thursday.
it was FRIDAY, ON MAY 2, 1980.
12th May 1980 was a Monday.
May 11th, 1980 was a Sunday.
May 30, 1980 was a Friday.
May 18, 1980, was a Sunday.
May 20 1980 was a Tuesday.
May 31, 1980 fell on a Saturday.
May 27th, 1980 fell on a Tuesday.
May 27, 1980 fell on a Tuesday.
May 23rd, 1980 fell on a Friday.