The Christmas Season certainly was appropriate for The Lion, the Witch and the Wardrobe. Some have thought that summer was the wrong season for Prince Caspian, but perhaps it is a bit of providence that it is playing this time of year. Michael Ward, the author of Planet Narnia, may have been incorrect when he suggested that the month "Greenroof" was equivalent to our month of March. It seems to me that June, the time when the trees are completing their Green Roof over the forests, is probably the correct seting for the book. Plus, early apples might be found in June, but never in March. (Of course, this one small objection does not negate all the fine work Ward has done.)
Some have suggested that Lewis's reference to Mid-Summer is somehow Satanic. This is despite the fact that Chapter Twelve ("Sorcery and Sudden Vengeance") is obviously an admonishment against occult practices. (For my view on Bacchus, see Divine Revelers: The god of wine helps awaken Narnia.)
God Himself is the One who gave us Mid-Summer. This goes back to the beginning when he created everything. Genesis 1: 14-18 (NKJV) declares:
The placement of the Sun and Moon and Stars is God's idea. Recognizing the cycle of the seasons is (or should be) recognizing Him.Then God said, "Let there be lights in the firmament of the heavens to
divide the day from the night; and let them be for signs and seasons, and for
days and years; "and let them be for lights in the firmament of the
heavens to give light on the earth"; and it was so. Then God made two great
lights: the greater light to rule the day, and the lesser light to rule the
night. He made the stars also. God set them in the firmament of the heavens
to give light on the earth, and to rule over the day and over the
night, and to divide the light from the darkness. And God saw that it was
good.
Happy Mid-Summer!