It was a Sunday.
Dates are written month/day/year in the US and day/month/year in most other countries. December 5 1970 was a Saturday. January 25 1970 was a Sunday.
25 January 2002 was a Friday.
25 January 1874 was a Sunday.
25 January 1943 was a Monday.
January 25 1955 was a Tuesday.
January 25, 1996 was a Thursday.
January 25, 1968 was a Thursday.
January 25 2010 was a Monday.
January 25, 1997 was a Saturday.
January 25 1981 was a Sunday.
Saturday
Friday