text: In Ireland Prior to the Christianisation of Ireland in the 5th century AD, the Celtic quarter days were observed:
  Imbolc (February 1)
  Beltaine (May 1)
  Lughnasadh (August 1)
  Samhain (November 1)
  These are now called cross-quarter days since they fall about halfway into each of the English quarters.
  Since 2022, when a holiday for Imbolc was added to the list, all four traditional Celtic quarter days are now marked in the Republic of Ireland by an annual public holiday.
  In Scotland
  The "Old Scottish term days" corresponded approximately to the old Celtic quarter days:
  Candlemas (2 February)
  Whitsunday (legislatively fixed for this purpose as 15 May)
  Lammas (1 August)
  Martinmas (11 November).
  These were also the dates of the Quarter Days observed in northern England until the 18th century.
  The dates for removals and for the employment of servants of Whitsunday and Martinmas were changed in 1886 to 28 May and 28 November respectively. The Term and Quarter Days (Scotland) Act 1990 redefined the "Scottish term days", in official use, as:
  28 February,
  28 May,
  28 August and
  28 November.
  The Act specifies that the new dates take effect on 13 June 1991 (12 months from the date it was passed).  Thus the Scottish term days, as days on which rents are paid, correspond more closely to the cross-quarter days than to the English quarter days.