Not strictly Personal computing, except that some of the items covered are tied to that.
This really caught my eye, and I figured (maybe I'm wrong) it could come in really useful at least to some degree for just about everyone. It comes from Lifehacker which I couldn't live without. Well, not as well, anyway. Don't forget to check your papers, though. This doesn't tell you where to buy, after all. It's just a "general guide".
It's been “just sitting there” so... here's my contribution for today. Lifehacker’s calendar:
Reproduced from Lifehacker: http://lifehacker.com/#!5736625/the-best-times-to-buy-anything-in-2011