April 18

The International Day for Monuments and Sites, established by ICOMOS in 1982, is observed on April 18 to raise awareness about the need to preserve cultural monuments and heritage locations. UNESCO endorses the day, annually selecting themes to highlight challenges such as conservation, restoration, and sustainable tourism. Events include site tours, exhibitions, workshops, and lectures led by heritage professionals and local communities. Participants explore the historical significance of monuments and advocate for their protection against threats like urbanization, conflict, and environmental change. The day fosters global solidarity in safeguarding humanity’s shared heritage.

World Amateur Radio Day, established by the International Amateur Radio Union (IARU) in 1925, is observed on April 18—the anniversary of IARU’s founding. The day highlights the role of amateur radio operators in facilitating global communication, public service, and disaster response. Clubs and enthusiasts host on-air events, contests, and open house demonstrations to showcase radio technologies. Workshops and lectures cover topics like propagation, digital modes, and emergency preparedness. The observance fosters international goodwill and inspires new generations to explore the science and community of amateur radio.