whitsun

Whitsunday.

1909, Sidney Heath, Romance of Symbolism: Fonts and the symbols of baptism - The times [for baptism] of which Whitsun Eve is one, are specified by ... the constitutions for Orthobon for England, Gerona, 517, c. iv.

The holiday beginning on Whitsunday.

1978, Peter Bailey, Leisure and class in Victorian England: Rational recreation and the contest for control, quoting "a British observation from early 20th century", read in Orvar Löfgren, On Holiday: A History of Vacationing (2002) - The excursion train used to vomit forth, at Easter and in Whitsun week, throngs of millhands of the period, cads and their flames, tawdry, blowsy, noisy, drunken.

Of, or relating to Whitsunday or Whitsuntide