“It's times like this when the age of the universe becomes a useful unit of measurement: 64-bit Unix time will last until twenty-one times the age of the universe from now - until (assuming we don't manage another upgrade in the meantime) December 4 in the year 292,277,026,596 CE, when all the computers will go down. On a Sunday.” Unix64 Bit SystemsAge Of The UniverseUnix Time Book:Humble Pi: A Comedy of Maths Errors Source: Humble Pi: A Comedy of Maths Errors