World Anaesthesia Day is observed worldwide every October 16, commemorating the first use of ether anaesthesia by American dentist William T. G. Morton in 1846, which marked a significant advancement in painless surgical treatment. The day highlights the importance of anaesthesia for all patients undergoing surgery, as it ensures painless procedures. Celebrations are primarily organized by anaesthetists, who participate in conferences, seminars, and other events to discuss advancements and practices in the field. Anaesthetists utilize various types of anaesthesia, including general, regional, and sedation, each serving distinct purposes in medical procedures. This observance underscores the critical role of anaesthesia in modern medicine and its impact on patient care.