International Missing Children's Day is one day a year when people remember missing children and their families. The charity mark this day by holding their Big Tweet for Missing Children. For 24 hours the charity harnesses the power of Twitter to publicise missing children appeals. The charity tweets a different missing child appeal every 30 minutes for 24 hours and are supported in this by a range of celebrities and organisations. In 2013 The Big Tweet for Missing Children was sponsored by The Sun newspaper and celebrities including Simon Cowell and Stephen Fry endorsed the campaign making it the most successful Big Tweet in the charity's history. Missing People's Twitter handle is @MissingPeople.