The landing on 25 April is commemorated every year in both countries as "Anzac Day". The first iteration was celebrated unofficially in 1916, at churches in Melbourne, Brisbane and London, before being officially recognised as a public holiday in all Australian states in 1923. The day also became a national holiday in New Zealand in the 1920s. Organised marches by veterans began in 1925, in the same year a service was held on the beach at Gallipoli; two years later the first official dawn service took place at the Sydney Cenotaph. During the 1980s, it became popular for Australian and New Zealand tourists to visit Gallipoli to attend the dawn service there and since then thousands have attended. Over 10,000 people attended the 75th anniversary along with political leaders from Turkey, New Zealand, Britain and Australia. Dawn services are also held in Australia; in New Zealand, dawn services are the most popular form of observance of this day. Anzac Day remains the most significant commemoration of military casualties and veterans in Australia and New Zealand, surpassing Remembrance Day (Armistice Day).