Q: How should I spend all that building material you will credit to me? Mine levels take forever to finish!
A: For 18 days after the merge upgrades of mines will take 8 hours at the most.
...what if 18 days are not enough, providing you have huge mines allready and you do want to get some sleep aswell?
Last merge, you were given 18 days aswell but it ended up being 25 days... will that be the same this time?