"Amazon provides the Amazon Time Sync Service, which is accessible from all EC2 instances, and is also used by other AWS services. This service uses a fleet of

"Amazon provides the Amazon Time Sync Service, which is accessible from all EC2 instances, and is also used by other AWS services. This service uses a fleet of satellite-connected and atomic reference clocks in each AWS Region to deliver accurate current time readings of the Coordinated Universal Time (UTC) global standard through Network Time Protocol (NTP). The Amazon Time Sync Service automatically smooths any leap seconds that are added to UTC. "The Amazon Time Sync Service is available through NTP" https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set-time.html https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set-time...