I'm a regular close vote queue handler and for that reason interested in the close vote queue size. (the size itself is fine/too high/too low/depressing/suicidal/whatever: we don't need another duplicate discussion on that)
Thanks to hichris123 (with support of Undo) we have a two week window on a Close Vote Queue Graph.
As you can see every day around 03:00 UTC the close vote queue drops as explained in How do close votes age away?
However, at 16:00 UTC on Saturday it looks like the aging script is run as well.
Does this happen and what is the reason behind it?