Oak Apple Day (England), and its related observance: Castleton Garland Day (Castleton)

Castleton Garland Day or Garland King Day is held annually on 29 May in the town of Castleton in the Derbyshire Peak District. The Garland King, on horseback, and covered to the waist in a heavy, bell-shaped floral garland, leads a procession through the town.

Castleton is a village and civil parish in the High Peak district of Derbyshire, England, at the western end of the Hope Valley on the Peakshole Water, a tributary of the River Noe, between the Dark Peak to the north and the White Peak to the south. The population was 544 at the 2021 Census.

May 29 is the 149th day of the year in the Gregorian calendar; 216 days remain until the end of the year.