For figuring the doomsday of a particular year, you can use the Odd+11 rule. Let X be the last two digits of a year. If X is odd, add 11. Divide X by 2. If

For figuring the doomsday of a particular year, you can use the Odd+11 rule. Let X be the last two digits of a year. If X is odd, add 11. Divide X by 2. If X is odd, add 11. Let Y = 7 − (X mod 7). Count forward Y days from that century's anchor day to get the year's doomsday. https://arxiv.org/pdf/1010.0765 https://arxiv.org/pdf/1010.0765