EO Challenge: End of Days

EO Challenge: WOW Snow. Extra challenge: end of the world fics or happy to be alive fics. The lovely Enkidu smells a quadruple drabble so I decided to go one better as it's Christmas, and present a story in five individual drabbles. Did the mayans really foresee the end of days when their calendar stopped at 21st December 2012? Or was there some other perfectly logical reason?