Winter garden time

It just got down to freezing again last night, but they promised that it would be a hard (low 20's) freeze tonight.  I went ahead yesterday and erected two of my "cold frames" to see if I can get some veggies again this winter.  I planted one row of Olympia spinach and one row of kale.  I think I am about two weeks (or more) behind my planting time last year.  It took quite a bit of effort to till the two rows--there still has been almost no rain here for nearly three months now.  I probably should pick what Swiss Chard is left today.