I do not understand why people sell into the orders on a saturday or sunday at all.
After all the hacked and "hacked" exchanges lots of people rather remove their coins and orders over the weekend and the chinese hardly trade at all during the weekends.
Basically selling larger amounts during a weekend is a safe way to lose like 10% money, regardless if it is BLK or any other coin. Maybe these people are living in the past where one year ago the most insane pumps would be during the weekend in order to exploit noobs who got their friday paycheck *g*