Where can you confirm / configure the Time Synchronization in the Mx Cloud? https://aws.amazon.com/blogs/aws/keeping-time-with-amazon-time-sync-service/ Amazon Time Sync Service, a time synchronization service delivered over Network Time Protocol (NTP) which uses a fleet of redundant satellite-connected and atomic clocks in each region to deliver a highly accurate reference clock. This service is provided at no additional charge and is immediately available in all public AWS regions to all instances running in a VPC. You can access the service via the link local 169.254.169.123 IP address. This means you don’t need to configure external internet access and the service can be securely accessed from within your private subnets.
I’ve got the answer to this question from Mendix:
On Mendix Cloud V4 Google Public NTP servers are used on the underlaying EC2 instances to sync the clock over the internet.