It was a Friday.
This day was a Friday.
It was a Monday.
Thursday
Saturday
July 10th 1980 was a Thursday.
November 10th, 1980 fell on a Monday.
January 10th 1980, was a Thursday.
10th October 1975, was a Friday.
October 10th 1992 was a Saturday.
10th October 1979 was a Wednesday.
3 October 1980 was a Friday.
14th October 1980 was a Tuesday.