Let's consider the market movement (euro futures) of week 1-5.12. First we will look at the volumes of all contract since 08.09, as that day there was a change to the December contract.
Max volume for contract prices (till Thursday 04.12 at 8:00):



During all the contract on the prices 1,263/1,27/1,285 huge volume was formed.As current contract comes to an end, from 1st to 5th of December on the market appears large volumes of days (closing large positions).That forms total volume of week on the price 1, 262:



On Thursday 4.12 at 8:00 we already have large volume of week which has been formed for three days.Pay your attention: volume of the week 7179 lots, and volume of all the contract 19767 lots.
That means only for 3 days was formed 1/3 of all volumes for the contract.That tells about serious movement in the market.Exactly that happened on Thursday:



I show in more details as happens deal on "buy" from these levels. After 8:00 the market gained from level of week 1, 262 and what`s interesting - on that price-1.262 from 7 to 8:00 was formed max volume of an hour, hour befor strong movement.
Volume of an hour we see on a cluster chart: