The price of ce

Hi
Does anyone know the specific times (if any) during the week when prices drop/rise, reach equilibrium etc. I don't play much so this would be quite valuable to know.
I want to know this so i can determine when to buy energy for crafting. I have a large reserve of crowns but I am quite cheap when it comes to buying energy. Also, will the price ever drop back to the 6300-6500 crown range.

OK thanks, I'm just going to assume UTC is GMT.
I probably should have gave it a better title otherwise people think i'm just another ce whiner.

Bids posted on the CE market never expire, so just pick a price point you're comfortable with, stick up a bunch of bids, and wait for them to get filled. At some point the price will dip and your bids will get filled.

Bids posted on the CE market never expire
If an offer is not filled in 10 days, it is automatically canceled.. I don't think I've personally tested this on SK, but it is, of course, identical to Puzzle Pirates exchange and I have tested it there.

Oh, so they do. I guess I haven't had any bids survive that long yet.
Does anyone know the specific times
I'm afraid I don't track this kind of thing that closely, maybe someone else does. In my limited experience, the exchange rate of CE (and prices on the AH) are cheapest during the middle of the night, USA time. If I got my conversions right, is about 23:00UTC until 04:00UTC.