#season.time_period  a recurrent time marked by major holidays; "it was the Christmas season"
  supertype:  #time_period__period__period_of_time  an amount of time; "a time period of 30 years"; "hastened the period of his recovery"
  subtype:  #Michaelmastide  the season of Michaelmas
  subtype:  #Lammastide  the season of Lammas (Scotland)
  subtype:  #Eastertide  the Easter season
  subtype:  #Twelfthtide  the season of Epiphany
  subtype:  #Allhallowtide  the season of All Saints' Day
  subtype:  #Christmas__Christmastide__Christmastime__Yule__Yuletide__Noel  period extending from Dec. 24 to Jan. 6
  subtype:  #Advent  the season including the four Sundays preceding Christmas
  subtype:  #Shrovetide  immediately preceding Lent
  subtype:  #Lent__Lententide  a period of 40 weekdays from Ash Wednesday to Holy Saturday

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