When did up helly AA first take place?

Up Helly Aa first took place on January 1, 1881, in Lerwick, Shetland, Scotland. It began as a fire festival to celebrate the Viking heritage of the Shetland Islands. The event has since evolved into an annual celebration featuring a torch-lit procession and the burning of a Viking longship. Today, it attracts thousands of spectators and participants each year.