Why huge sales drop today on themeforest? Is there anything wrong?

Screenshot 1: http://take.ms/VMhDe
Screenshot 2: http://take.ms/ZybXJK

Link http://trackvato.com/tf/

I would assume that it’s because it’s still Friday for much of the world… Saturday just started so of course there will be few sales on there.

I am observing last 2 weeks of ever month is low sales or no-sales, from last 2 months.
Friday is always very slow at my side.