National Automatic Door Day is celebrated on March 19 each year, recognizing the significance of automatic doors that serve as gateways to various places such as hospitals, buildings, and malls. This day aims to honor the technology behind automated doorways and unite manufacturers and professionals within the automatic door industry. The origins of automatic doors can be traced back to ancient Greece, where mechanisms were designed to open temple gates. In the modern era, the first real automatic doors were developed by American engineers in the early 20th century, with significant advancements made by Dee Horton and Lew Hewitt in 1954, leading to the widespread use of sensor-activated doors in commercial spaces. Celebrations may include discussions about the technology and its impact on accessibility and convenience in everyday life.