Setup DC for time sync to external NTP server.
Sync Domain Clock with Internet NTP Sources - Concurrency
Configure DC to synchronize time with external NTP server
NTP Circular Time Sync – Windows Server 2012 R2 / Hyper-V « KiloRoot
Windows Server 2012 R2 : NTP Server : Server World
Windows Server 2012 R2 : NTP Server : Server World
NTP Server AD Server 2016 - YouTube
Video: Windows Server 2012 – Configuring NTP Servers for Time Synchronization | Experts Exchange
Setting a right time synchronisation in a Microsoft Windows Domain - Marco Schiavon
How Do I Configure my Server to use an Internet Time Service? - Stone Computers :: Knowledgebase
How to Synchronize the Time Server for the Domain Controller with an External Source - YouTube
Time Server Settings in a Windows Domain
Windows Server 2012 R2 : NTP Server : Server World
How to Synchronize Time on Domain Client Computers using Windows Server 2012 - YouTube
Windows Server 2012 R2 : NTP Server : Server World
Windows Server 2012 R2 : NTP Server : Server World
Configure DC to synchronize time with external NTP server
Setting a right time synchronisation in a Microsoft Windows Domain - Marco Schiavon
Time Server Settings in a Windows Domain
Windows PDC use GPO to point Microsemi device IP addresses - Microsoft Q&A
