Epoch
The epoch of the Julian calendar was on the Saturday before the Monday that was the epoch of the Gregorian calendar. In other words, Gregorian 1 January 1 AD = Julian 3 January 1 AD. The Revised Julian reform not only changed the leap rule but also made the epoch the same as that of the Gregorian calendar. This seems to have been carried out implicitly, and even scientific articles make no mention of it. Nevertheless, it is impossible to implement calendrical calculations and calendar date conversion software without appreciating this detail and taking the 2-day shift into account. If the original Julian calendar epoch is mistakenly used in such calculations then there is no way to reproduce the currently accepted dating of the Revised Julian calendar, which yields no difference between Gregorian and Revised Julian dates in the 21st century.
Read more about this topic: Revised Julian Calendar
Famous quotes containing the word epoch:
“A man lives not only his personal life, as an individual, but also, consciously or unconsciously, the life of his epoch and his contemporaries.”
—Thomas Mann (1875–1955)
“Old age cannot be cured. An epoch or a civilization cannot be prevented from breathing its last. A natural process that happens to all flesh and all human manifestations cannot be arrested. You can only wring your hands and utter a beautiful swan song.”
—Renee Winegarten (b. 1922)
“Our own epoch is determining, day by day, its own style. Our eyes, unhappily, are unable yet to discern it.”
—Le Corbusier [Charle Édouard Jeanne] (1887–1965)