Computer Rebuild

Yo. I'm wanting to rebuild my computer in the next few months and I was wondering if anyone knows when the best time to buy the parts will be. I'm guessing that Black Friday and Cyber Monday sales might be my best bet, but I'm not sure. I'm not looking to buy brand new top-of-the-line parts, so release dates of new parts shouldn't really factor into this question unless they affect the price of parts that are out already.