January 31st, 1900 was a Thursday.
January 31st, 1971 fell on a Sunday.
January 31st, 2009 fell on a Saturday.
January 31st, 1972 fell on a Monday.
31st of January 1978 fell on a Tuesday.
Tuesday
It was a Monday.
January 31st, 2013, is a Thursday.
January 1st 1900 was a Monday.
January 2nd, 1900 was a Tuesday.
January 5th, 1900 was a Friday.
January 3rd, 1900 was a Wednesday.
January 8th, 1900 was a Monday.