23 December - Saturday
Day of long-range aviation of the Russian Air Force - December 23, 1913 the first heavy four-engine bomber "Ilya Muromets" made its first flight.
Day of snow angels.
Memorial Day of Mina Eloquent.
National biscuit day with nuts - USA.
In 1672, Saturn's second largest satellite, Ray, was discovered.
1913 in the United States founded the Federal Reserve System.