International Museum and Cultural Heritage Day (May 18 Gregorian) is observed annually on May 18 to highlight the importance of museums and cultural heritage in societies around the world. This observance was officially added to the Gregorian calendar in 1977 by the International Council of Museums (ICOM) to recognize the vital role of museums in education, public awareness, and the preservation of historical and cultural artifacts. The day was designated to emphasize the need to protect cultural heritage and to showcase the contributions of museums to cultural development. Since its establishment, museums in various countries have organized special programs and exhibitions on this day to present their collections and draw public attention to the significance of cultural heritage. The event provides an opportunity for discussion about the challenges of heritage preservation and for sharing experiences among professionals and enthusiasts. Today, International Museum and Cultural Heritage Day is recognized as a global event, marked each year with different themes and slogans. The day helps raise public awareness about the value of museums and the need to safeguard cultural heritage, and it plays an important role in promoting international cooperation in this field.