Google does spread oncall rotations across multiple timezones. Most SREs are oncall only during the day, with the local nightshift being somebody else's dayshif

Google does spread oncall rotations across multiple timezones. Most SREs are oncall only during the day, with the local nightshift being somebody else's dayshift. For a more detailed look at Google's SRE operations, watch Ben Traynor's excellent talk "Keys to SRE": https://www.usenix.org/conference/srecon14/technical-sessions/presentation/keys-sre https://www.usenix.org/conference/srecon14/technical-session...