Bob, I can only answer that as a snapshot in time.
(What I am working on (looking at) right now.)
3 months ago, my average was 2 - 4 months out.
1 month ago, my average was 3 - 5 months out.
Today, my average is almost zero.
I am not buying anymore snaps nor activiting the ones I have at the present time.
Their success rate has dropped drastically. And, since they are making it difficult to check for available snaps. I am not going to do anything with them until their success rate climbs. (Snaps and SnapNames)
I have a number of them sitting on clear because the snapped missed continously over the past two months.