When Does The Calendar End. The former means the same as bc and the latter is the. Leave years begin on the first day of the first full biweekly pay period in a calendar year.

For longer calculations, the maya devised what is known as the long count calendar and it is this which has attracted so much international attention in recent years regarding the end of the world on 21 december 2012. In the modern calendar, we label all years with b.c.