Æfterra Gēola, m.n: “Second Yule” or “After Yule”, i.e. January. (“af-ter-ruh yeh-o-luh”)
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Further information from Kazutomo Karasawa’s The Old English Metrical Calendar (Menologium) (Cambridge, 2015)
Karasawa writes, ‘December and January shared the name Iula (Giuli, Geola) and Ærra ‘former’ or Æfterra ‘latter’ was added to distinguish the two’ (p. 126). He points out that while 1 January was the beginning of the Roman year, the liturgical year began with 25 December (p. 87).