Great picture, Oberon! They look pretty healthy, too.
I haven't grown garlic in a number of years and when I did it was on the opposite coast.
The gardening calendar here suggested planting it, in my zip code and zone, before September 30, but it was still quite warm then. I got my bulbs from Seed Savers Exchange, and their information suggested it is best to plant "after the first frost" which, here, is statistically forecast for October 31st.
So I planted them in the first week of October, kind of splitting the difference.