May 1, 2009 is on a Friday and May 1, 2010 is on a Saturday.
The day of the week that May 1, 1977 fell on was a Sunday.
May Day, May 1 2009, was on a Friday.
May 1, 1982 was a Saturday.
1 May 1970 was a Friday.
May 1 1983 was on a Sunday.
May 1 2010 was a Saturday.
May 1 1925 was a Friday.
May 1, 2009, was a Friday.
May 1 1998 was a Friday.
May 1 1956 was on a Tuesday.
May 1 2005 was a Sunday.
May 1, 1662 was on a Monday.