Up Helly Aa from Upholiday, the lowland Scots word for Twelfth Day, and was brought by them to the Shetland Islands in the 19th century. There is a main guizer who is dubbed the "Jarl". There is a committee which a person must be part of for 15 years before one can be a jarl, and only one person is elected to this committee each year. The procession culminates in the torches being thrown into a replica Viking longship or galley. The event happens all over Shetland and is currently celebrated at ten locations – Scalloway, Lerwick, Nesting and Girlsta, Uyeasound, Northmavine, Bressay,
Lerwick with the warmest recorded month being July 2006 at an average high of . Lerwick has 6,958 residents, as of 2011. It is 97.0% White (83.3% White Scottish, 8.9% White Other British, 2.6% White Other, 1.4% White Polish, 0.8% White Irish), 2.2% Asian or Asian Scottish or British Asian, and 0.8% Other ethnic groups. Lerwick's residents are 2.5% unemployed, 17.3% are part-time employees, and 50.3% are full-time employees. Lerwick is a busy fishing and ferry port. The harbour also services vessels supporting the offshore oil industry. Main power supply is from Lerwick Power Station located in Gremista. Significant buildings in