Everyone knows that both Christmas Day and New Year's Day always fall on the same day of the week. However, in 1939, the year of the outbreak of World War II, Christmas fell on a Monday and New Year's fell on a Sunday. Why?
In any given year Christmas Day and New Year's Day fall on different days of the week. Christmas occurs around 51 weeks later in the year than New Years Day. 1939 was no different.
Today's brain teaser courtesy of Braingle.com.