[Matt: All 31 day months have three consecutive days that occur five times. With only seven possible starting points, it happens way more often than every 823 years.]
So my theory was wrong about 5 Sunday, 5 Monday and 5 Tuesday. Though this august (August 2010) has 5 Sunday, 5 Monday and 5 Tuesday.Thanks Matt for calculation. (Old Post content: Do you know, after 823 years, there will be 5 Sunday, 5 Monday and 5 Tuesday in coming August (August 2010)).
!!! Rock On !!!