Day, a unisex given name of English origin, is derived from the Old English word 'dæg', which means 'day'. It was originally used as a personal name, but over time, it has also been adopted as a surname. Day is often associated with brightness and positivity, reflecting the light and warmth that accompany daytime. The name can be given to both boys and girls, making it versatile and inclusive.
The name Day experienced peaks in popularity during the mid-20th century, with a noticeable spike in 1973 (12 births) and consistent usage thereafter until the early 21st century. However, its usage has since declined, with fewer than 8 births recorded annually between 2016 and 2022.