Red Hat Satellite certificates expire at 11:59:59 PM on the date listed in the certificate's expires field. The Satellite server's time zone is used. New certificates become active at 12:00:00 AM on their issued date.
A manifest file may contain multiple subscriptions, each with their own validity period. A subscription can provide access to multiple product repositories. When a subscription expires, access to those repositories is no longer available, so Satellite cannot synchronize their content. However, if an active subscription provides access to one or more of the same repositories, Satellite will continue to synchronize the content of those repositories. Repositories not included in an active subscription are unable to be synchronized.