High Quality Content by WIKIPEDIA articles! The Yorke Peninsula Field Days are three-day, biennial field days, held on a permanent site outside Paskeville on Yorke Peninsula, South Australia. The Field Days have a major focus on agriculture. The Field Days began in 1895 as a Field Trial of agricultural and horticultural implements. The Yorke Peninsula Field Days are the oldest in Australia and one of the biggest, exhibiting millions of dollars worth of farm machinery.