How's Your Luck on Friday the 13th?

Black cats, bad pennies, broken mirrors and other bad luck trolls could be waiting behind any corner today.
This is the day the superstitious dread when Friday and the number 13 coincide on the calendar. The law of averages demand that good things are bound to happen, even on the unluckiest of days. Yet that knowledge is little comfort to the people who take great pains to avoid cracks in the sidewalk or wait under a ladder. Some will not even begin a trip on a Friday, especially if it falls on the 13th.
For the superstitious, the kids at Camp Crystal Lake in the Friday the 13th movies had it easy. They know the corners could have worse dangers in store for them today.
For centuries, otherwise sensible, intelligent people have held special fear in their hearts for both the day and the number. The explanation for the association of Friday the 13th with bad luck is the belief that Christ was crucified on a Friday and the fact that there were 13 men present at the Last Supper.
Another legend from the 17th century says that witches and warlocks gathered on the Friday before the Sabbath and the 13th attendant was considered Satan.
Centuries later, there are still events such as breaking a mirror, spilling salt or having a black cat cross one's path that seem especially ominous on Friday the 13th.
People try, consciously and unconsciously, all kinds of methods to break their bad luck spells and hopefully invite good fortune. Some look for four-leaf clovers, horseshoes and pennies with Lincoln facing up. Others knock on wood, rub a rabbit's foot or carry silver dollars in their pocket, all designed to invite good luck on the day most associated with the bad.