That was on a Wednesday.
The given date was a Sunday.
Wednesday
January 8, 1965 was a Friday.
January 6 (of the following year).
January 15, 1980 was a Tuesday.
7 January 1980 was a Monday.
20 January 1980 was a Sunday.
January 19 1980 was a Saturday.
19th January 1980, was a Saturday.
1 January 1980 was a Tuesday.
January 6, 1980 was a Sunday
26 January 1980 was a Saturday.
January 26th, 1980 fell on a Saturday.
January 22nd, 1980 fell on a Tuesday.
January 9, 1980 fell on a Wednesday.
January 10th 1980, was a Thursday.