Sync with time server on iPad (date/time) via WiFi? We are deploying iPads in an enterprise environment. We have a specific use case where we will use an app for internal use only. We tried to completely lock down access, but we see it is too restrictive. For example, the iPad needs to talk with a time server to sync the date and time. Does anyone know the specifics about what servers the time sync occurs with? Is it just apple.com? Or perhaps a set of time servers?
https://support.apple.com/en-us/HT202944

123 UDP Network Time Protocol (NTP) 1305    ntp Date &amp; Time preferences, network time server synchronization, Apple TV network time server sync