This article is based on SAP Note 2657503 – How to find Schedule for Support Package Stacks (SPS).
It is always be the best practice for you to review the release schedule before deploying any Support Package Stack (SPS) in your SAP landscape. With this information in hand, you can propose the target SPS level in advanced and also the timeline accordingly.
Go to the following SAP URL,
Click on Schedules for Support Package Stack
You will get the release schedule as below,
