Thursday
August 4, 1900, was a Saturday.
It was a Monday, as was the first day of the year for 1900. 1900 was NOT a leap year, even though 1900 is divisible by 4, as for years ending in 00, the first two digits must also be divisible by 4 (eg. 1600, 2000, 2400). January 1 (and 29) in 1901 fell on a Tuesday.
Tuesday.
It was on a Wednesday.
4 January 2004 was a Sunday.
4 January 1958 was a Saturday.
4 January 1983 was a Tuesday.
4 January 1863 was a Sunday.
January 4, 2009 was a Sunday.
January 4, 1964 was a Saturday.
January 4 2011 was a Tuesday.
4 January 1952 was a Friday.