Answer: April 18
Notes: World Heritage Day, also called the International Day for Monuments and Sites, is observed on April 18 each year. It aims to promote the preservation of cultural and natural heritage. The day has been recognized by the United Nations Educational, Scientific and Cultural Organization (UNESCO) since 1983 and is organized by the International Council on Monuments and Sites (ICOMOS). The theme for 2025 is "Heritage under Threat from Disasters and Conflicts," emphasizing preparedness and resilience.
