Thanks for the replies!
I wasn't clear. Not asking about nights, I was asking about status. I was Platinum this year, but I did not make enough stays to re-qualify for this year (unless Hilton wants to surprise me).
Thanks for the reply that I will still be Diamond until March 31st. My status still shows Diamond this morning, but as others have mentioned. the tracker bar for number of stays/nights is down.
Happy New Year everybody!