Emirates Skywards membership tiers
Effective November 30 2018, any Skywards Miles belonging to a Platinum member will not expire for as long he/she retains membership of the Platinum tier. If you are a Platinum member, you will see an adjusted expiration date whenever you have any Skywards Miles that were originally due to expire during your current Platinum tier cycle. This adjusted date will show as two (2) months after your next Platinum tier review date.
For example: if a Platinum member (with next tier review date of August 31 2019) has Skywards Miles due to originally expire on January 31 2019 as per standard expiration, this member will see an adjusted expiration date of October 31 2019 (calculated as 2 months after the upcoming tier review date).
Similarly, when a Platinum member retains their Platinum membership for another year, any unused Skywards Miles that were extended in their last Platinum cycle will again be extended to two (2) months after their next Platinum tier review date. The only time Skywards Miles that were extended on account of the member being Platinum will expire is if and when a member downgrades to Gold and has yet to redeem such Miles. You can refer to the Emirates Skywards Program Rules for complete details.