Windows 2019
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NTP : Configure NTP Client2019/02/04
 
Configure NTP Client to synchronize time with NTP Server.
NTP Client setting is configured with NTP Server [time.windows.com] by Windows default, so If Internet connected environment computer, time and date is already synchronizing.
Furthermore, if computers are in Active Directory Domain, NTP Client setting is also configured like follows, so generally it does not need to change settings.
* Domain Controlers synchronizes time with PDC in the Domain
* PDC in a Domain synchronizes time with PDC that is in Parent Domain or synchronizes time with other Domain Controlers
* Client Computers synchronizes time with Domain Controler that Clients now logons
In WorkGroup Environment Computers, it's possbile to change default NTP Server to others like follows.
[1] Run PowerShell with Admin Privilege and Configure. 
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

# confirm current synchronization NTP Server
PS C:\Users\Administrator> w32tm /query /source 
time.windows.com,0x8

# change target NTP Server (replace to your timezone server)
# number means
# 0x01 : SpecialInterval
# 0x02 : UseAsFallbackOnly
# 0x04 : SymmetricActive
# 0x08 : NTP request in Client mode
PS C:\Users\Administrator> Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\w32time\Parameters" -Name "NtpServer" -Value "ntp.nict.jp,0x8" 

# restart Windows Time service
PS C:\Users\Administrator> Restart-Service w32Time 

# re-sync manually
PS C:\Users\Administrator> w32tm /resync 
Sending resync command to local computer
The command completed successfully.

# verify status
PS C:\Users\Administrator> w32tm /query /status 

Leap Indicator: 0(no warning)
Stratum: 4 (secondary reference - syncd by (S)NTP)
Precision: -23 (119.209ns per tick)
Root Delay: 0.0252246s
Root Dispersion: 0.0824040s
ReferenceId: 0x85F3EEF3 (source IP:  133.243.238.243)
Last Successful Sync Time: 9/23/2019 10:15:33 PM
Source: ntp.nict.jp,0x8
Poll Interval: 8 (256s)
[2] If a Computer is in Active Directory Domain Environment and he is a Forrest Root, synchronization target is often configured to [Local CMOS Clock] (Hardware Clock), then, if you'd like to change settings from [Local CMOS Clock] to other network NTP server, set like follows. 
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

# in AD Domain Environment, [Type] is set to [NT5DS]
PS C:\Users\Administrator> (Get-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Services\w32time\Parameters").GetValue("Type") 
NT5DS

# if target is [Local CMOS Clock] but you'd like to change it, change [Type] to [NTP] first
# next, change to NTP server with the same way in [1] section
PS C:\Users\Administrator> Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\w32time\Parameters" -Name "Type" -Value "NTP"
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