The given date was a Wednesday.
June 29th, 1909 fell on a Tuesday.
June 30 1977 was a Thursday.
June 9th, 1977 fell on a Thursday.
June 17, 1977 fell on a Friday.
July 29th, 1977 fell on a Friday.
Tuesday
Saturday
June 29th 1984 was a Friday.
June 29th 1963 was a Saturday.
June 29th 1997 was a Sunday.
It just does. If you look at the days for it in the years running up to it, you can it progresses by one day each year and two days in a leap year: Friday 29th of June 2001 Saturday 29th of June 2002 Sunday 29th of June 2003 Tuesday 29th of June 2004 (leap year) Wednesday 29th of June 2005 Thursday 29th of June 2006 Friday 29th of June 2007 Sunday 29th of June 2008 (leap year) Monday 29th of June 2009 Tuesday 29th of June 2010 Wednesday 29th of June 2011
July 29th 1941 was a Tuesday.