Originally Posted by
VA1379
The counter is from January to December of each calendar year when you login to marriott.com, but Marriott does have a rolling calendar year for qualification purposes.
.
Thanks, but it's no more comprehensible in your boil-down than it was in the zillion threads. But the upshot is I'm back to needing 75 nights for plat, when a few days ago I only needed 6.