World Tennis Day is celebrated worldwide on the first Monday of March to honor the sport of tennis, which is enjoyed by millions. The day was launched in 2013 by the International Tennis Federation (ITF) during its centenary celebrations, with the date chosen to be close to the ITF's founding anniversary on March 1. The event aims to promote tennis and encourage participation across all ages and backgrounds through high-profile exhibition events and various activities. Participants can celebrate by attending local events, learning about the history of tennis, playing the game, or watching tennis-related documentaries. The modern form of tennis, known as lawn tennis, originated in England in the late 19th century, and the sport has maintained much of its original rules since then. Notably, the Grand Slam tournaments, including the Australian Open and Wimbledon, are among the most significant events in professional tennis.