That was a Saturday.
Sunday
The given date was a Wednesday.
January 13, 1985, fell on a Sunday.
It was a Sunday.
January 13th.
In the US, that fell on a Thursday.
That date can be interpreted in two ways. The 2nd of January 1951 was a Tuesday. The 1st of February 1951 was a Thursday.
November 13th 1951 was a Tuesday.
Sunday
January 13th 1987 was a Tuesday.
January 13th, 1900 was a Saturday.
January 13th 2010 was a Wednesday.