Starting September 15, the III International Astronomy Olympiad (OWAO) will begin on the federal territory of "Sirius". The Olympiad has brought together the best astronomical traditions and united outstanding subject specialists from around the world. The Olympiad consists of 4 rounds: observational, practical, theoretical, and test. The tasks were prepared by an academic commission composed of representatives from various countries. Participants can be children up to 18 years old. They will have an extensive program: lectures, workshops, and excursions. Registration will continue until August 10. (https://my.sirius.online/activity-page/owao:olymp-organizer-2024)