This is a rehash of this
question which lost it's way here on EE.
(I've added some sample data to the spreadsheet)
I figured out how to get my EE points total for the past 12 months
(It updates automatically every month).
Based on the 50,000 points in the last 12 months
EE rewards rule, I can manually work out
that I have enough points to retain free premium membership until
the end of December 2018 (If I get no more points)?
How can the end of rewards month be automatically calculated Excel?