Originally Posted by KARFA

If you hit 1500 TPs by September your gold runs for the rest of the current membership year, a full membership year after, and the card expires at the end of the next full month after your full years ends - so your card would expire on 30/11/17.

If you hit 1500 TPs in November (i.e. between 8/10/16 and some date in November you earned 1500 TPs) your gold runs for the rest of the current membership year, a full membership year after, and the card expires at the end of the next full month after your full years ends - so your card would expire on 30/11/18.