Perhaps a little explanation... The KEY element is understanding the TIW program.
We were in a similar situation.... time to renew for our NOVEMBER trip. KNOWING we would be taking a NOVEMBER trip in 2017...
So I emailed TIW. My question: OPTIMIZING my TIW card renewal.
The TIW folks were MORE than willing to help - based on TIW sales rules. And if I'm not quite clear? PLEASE contact them with YOUR PARTICULAR situation... they WILL help.
Now, in OUR PARTICULAR case? I got great advice. "Order a new TIW in the first week of OCTOBER, 2016". These people took the time to make sure our NEW TIW would be valid through the END of November 2017. THREE trips, for us.
TIW has an interesting criteria for Start/End date. NEVER start a TIW card close to the END of a month - ALWAYS start one in the first WEEK of the NEXT month. TIW runs on a "full month" schedule. If you START one on June 28? BONG - screwed. THAT card runs June through END OF JUNE, 12 months out.
Start one on July 2, same year? YOU WIN. THAT card runs July through the END of July, 12 months out.
The above is a transcription, based on OUR personal experience. In EVERY case? ASK TIW..... they will TELL you what the best deal is, for YOU. These are wonderful people.... they will NOT screw you

. They WILL tell you the truth, and work WITH you to help YOUR situation.