Wednesday.
4 weeks of which includes 4 of every day of the week. It has four weeks and has four of each day of the week.
Thursday
Friday
It was a Thursday.
Wednesday
4 August 1998 was a Tuesday.
4 August 1996 was a Sunday.
4 August 1946 was a Sunday.
4 August 1914 was a Tuesday.
August 4 1991 was on a Sunday.
August 4 1978 was on a Friday.
August 4 1948 was a Wednesday.
August 4 2010 was a Wednesday.
August 4, 1900, was a Saturday.
August 4, 2008 was a Monday.
August 4, 1988, was a Thursday.
August 4, 2000 was a Friday.