The Titanic sunk on April,12 1912 thats 4+1+2+1+9+1+2=23
Kurt Cobain lead singer of nirvana born 1967 1+9+6+7=23 he died in 1994 1+9+9+4.
The mayans say the world will end in 2012 20+1+2=23.
The Hiroshima bomb was dropped at 8:15 8+15=23.
I know a lot of you think 23 is just an ordinary number, but I dont think there are a lot of numbers with those ties.