National Operating Department Practitioners’ Day, also known as ODP Day, is observed in the United Kingdom every May 14. Established in 2018 by the College of Operating Department Practitioners and UNISON, this professional holiday recognizes the vital role of operating department practitioners (ODPs) in perioperative care, which includes the care provided before, during, and after surgical procedures. ODPs work in three main areas: anesthesia, surgery, and recovery, assisting anesthesiologists, preparing surgical instruments, and monitoring patients post-anesthesia. Celebrations typically involve information displays in hospitals, career talks in schools, fundraising events, and social media campaigns using the hashtag #ODPDay. The day aims to highlight the contributions of ODPs within the national healthcare system.