Doomsday conjecture

The Doomsday Conjecture is a theory proposed by mathematician John Horton Conway in the late 20th century. The conjecture relates to the calendar system, specifically predicting the date of significant events, including the likelihood of future catastrophic events based on the years of birth. Conway's Doomsday Conjecture asserts that certain dates of the year fall on the same day of the week, which can be used to determine the day of the week for any given date.