The PC+ Coupon Codes will be the same format every month.
June: 06-17PlatClub or 06-17Save6
July: 07-17PlatClub or 07-17Save6
August: 08-17PlatClub or 08-17Save6
03-17Save6 = This coupon is for $6 off of a $18 purchase; on anything in the store. This excludes New Releases, Gift Cards and memberships.
03-17PlatClub = This coupon code is good on DAZ Original items only. Excludes Platinum Club items, gift cards, and memberships.
You can recognize a DAZ Original by looking for "Artist: DAZ Originals" on the product page to the right of the promo image. If another artist is listed after DAZ Original, it is still a DAZ Original product.
The coupons expire every month. This means they cannot be rolled into the following month. You use them, or lose them.
The coupons are updated according to UTC (Universal Time Coordinated). So, it is possible they can expire early, as there is about a 5-6 hours difference.