What is "dudsday"

Dudsday, also Duds' day, or Dud's day was a hiring fair, a holiday, held at Kilmarnock in East Ayrshire, Scotland. Originally held at Martinmas that falls on November 11th it was later also held at Whitsun. At this fair farm servants etc would be hired. The name comes from the custom of farm Labourers purchasing new clothes or 'Duds' having been paid their wages for the previos half-year.