Staying Over New Year's Eve in InterContinental Singapore - Did it Count Towards 2017 or 2018?

I recently stayed in a Premier Suite at the InterContinental Singapore over New Year's Eve (well, I actually checked-in on 30 December 2017 and checked-out on 01 January 2018) and was curious to know which set of Accelerate challenges it would count towards. More importantly, I was curious to know whether the elite-qualifying nights counted towards my 2017 or 2018 quota. 

Click HERE to read my review of the InterContinental Singapore's Premier Suite!

IC Singapore Suite.jpeg

Premier Suite

InterContinental Singapore

Three days after I have checked out from the InterContinental Singapore, I noticed that my IHG Rewards Club points have been posted and the two nights that I have accrued from my stay (30 December 2017 to 01 January 2018) have been added to my 2018 counter. However, the two night stay actually triggered a bonus from last quarter's Accelerate instead of fulfilling one of the latest Accelerate challenges.