Friday the 13th. It in itself being bad luck stems from multiple amusing belief systems. However the number in its own significance means many things. But one usually has to take into account the number of the month and year for more appropriate reverence. However one of the most common sources of the apparent bad luck of 13 is that the ministry of Jesus collapses under this number eventually. The templars were massacred on a friday 13th in france few hundred years ago. 13 crystal skulls of the mayans also rings clear in some minds.
For me its a day of rather normal but minor syncrhoncities.