Doomsday Day of the Week Calculator

Doomsday Day of the Week Calculator. Use this device to quickly find the day of the week for any date between 1901 and 2099.    Doomsday in this context does not refer to world catastrophe, but rather to particular dates in any given year which always fall on the same day.  That day is called the “Doomsday” for that given year. John Conway, UK mathematician, in 1973 developed a technique where a bright person- Doomsday Day of the Week Calculator.