To configure time synchronization through registry edit on the PDC emulator:

1. Open Registry Editor (regedit.exe).

2. Navigate to the following registry key: HKLM\System\CurrentControlSet\Services\W32Time\Parameters.

3. To use a specific NTP source, modify the Type value to NTP.

4. Modify the NtpServer value to contain the NTP server to synchronize time with followed by 0x8, for example 131.107.13.100,0x8. Multiple NTP servers must be space-delimited, for example 131.107.13.100,0x8 24.56.178.140,0x8

5. Open an administrative Command prompt and execute the following command: w32tm /config /update.

references:

Recommendation - Configure the Root PDC with an Authoritative Time Source and Avoid a Widespread Time Skew | Microsoft Learn