A blood blister forms when skin and small blood vessels are damaged without breaking the skin. Trapped beneath the skin surface is some blood and skin fluid. Blood blisters are commonly caused by accidents in which the skin is pinched by a tool or a heavy weight, or they may occur from constant rubbing back and forth.
1 Sunshine hours in Chicago, Illinois range between 3:42 per day in December & 10:14 for each day in July. 2  The longest day of the year is 15:02 long and the shortest day is 8:57 long.  The longest day is 6:04 longer than the shortest day.
The Longest Day (film) For other uses, see The Longest Day. The Longest Day is a 1962 epic war film based on Cornelius Ryan's book The Longest Day (1959), about the D-Day landings at Normandy on June 6, 1944, during World War II. The film was produced by Darryl F. Zanuck, who paid author Ryan $175,000 for the film rights.