World Marbles Day is observed worldwide every year on Good Friday, coinciding with the British and World Marbles Championship held in Tinsley Green, West Sussex. This holiday celebrates marbles, one of the world’s oldest toys, with origins tracing back to around 2500 BCE. Participants can engage in various activities such as playing marbles, organizing neighborhood tournaments, or hosting marbles-themed parties. The British and World Marbles Championship, which began in 1588, has become a significant event, with its modern iteration established in 1932. Notably, the championship faced interruptions during World War II and the COVID-19 pandemic. Celebrants often share their experiences on social media using the hashtag #WorldMarblesDay.