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Ember day noun

  /ˈɛmbə ˌdeɪ/ , /ˈɛmbɚ ˌdeɪ/
  • (Christianity) Any of the three days within the same week, four separate sets of which occur roughly equidistant in the circuit of the year, that are set aside for fasting and prayer. In Western Christianity they are usually the Wednesday, Friday, and Saturday following the first Sunday in Lent, Whitsunday, Holy Cross Day (14 September), and Saint Lucy's Day (13 December).
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