iir, the darnkess drop was only once.

However, darkness drops are plentiful, as well as blackout drops, shutdown, and all about the 'break'.

And in my estimation, those are all related drops.

darnkess may have been a typo, or it may have been intentional as a reference to some book, as past digs have uncovered.

But the incessant "10 days of darkness" is just people having a mandela mind melt and confusing "3 days of darkness" from the bible with what Q said.