Not only yule and summer-solstice are worth a höfuðblót (main-blót), but also equinoces. Funnily enough, Miriam/Maria mother to Jesus yule-baby, is said to be spring (9 months before yule, she is fertile), and mother of John the Baptist to be (the infertile) autumn, our Ellisif, John being a summer-solstice figure. Note the other way round south of equator, i.e. for heathens (–not the up side down churchian feasts–).
The golden hair of Sif is seen as our life-saving harvest, the golden ripe meadow in the autumn-winds.
Some fiercely deny Easter to be from Easter, but they also refuse any Nature-cycles to be Churchian stuff. Heresy and wishful-thinking over-simplifications. Nature should be disregarded as mundane stuff only.