It was not a leap year as a result of the second finest adjustment of the Gregorian calendar where leap years are eliminated in centennial years not evenly divisible by 400 (Source: The Discoverers, Boorstin, page 9). As a result, the Julian calendar was 12 days behind the Gregorian until Wednesday, February 28 (O.S. February 16) and has been 13 days behind since Thursday, March 1 (O.S. February 17).

1900+ (also known as "1900 Plus") is the title of World Piano Music Concerts Series of the 20th Century and Contemporary Music, which is the initiative of world-known pianist Hayk Melikyan. It was launched in 2009. The Series include the works of different composers all over the world composed after the year of 1900.