As detailed in the Google Trust Services (GTS) Certification Practice Statement
and Subscriber Agreement, GTS may need to revoke or opt to revoke for a number
of reasons. Subscribers must be able to rotate certificates quickly should
revocation be necessary. To prepare for revocation that may need to happen
within a tight time interval, it is strongly suggested that subscribers use an
ACME client with ACME Renewal Information (ARI) support and configure
certificates such that they have fully automated lifecycle management. There are
circumstances where Google may need to revoke within 24 hours or 5 days, even if
doing so would cause adverse impact to a subscriber.