Fabian Nicieza's date of birth was December 31, 1961.
)List of observances set by the Bah calendarList of observances set by the Chinese calendarList of observances set by the Hebrew calendarList of observances set by the Islamic calendarList of observances set by the Solar Hijri calendar=== Month-long observances ===In Catholic tradition, December is the Month of the Advent of Christ
 In the Northern hemisphere, the beginning of the astronomical winter is traditionally 21 December or the date of the solstice

