Sychronise Time with NTP Server (Windows)
The Windows Time Service is an NTP client that can synchronise time based on the value retrieved from an NTP server. The settings are in the reg: [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time]
For the UK, the NTP server of the Univerity of Manchester is used below:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time]
"Description"="Maintains date and time synchronization on all clients and servers in the network. If this service is stopped, date and time synchronization will be unavailable. If this service is disabled, any services that explicitly depend on it will fail to start.
"
"DisplayName"="Windows Time"
"ErrorControl"=dword:00000001
"FailureActions"=hex:05,00,00,00,00,00,00,00,00,00,00,00,02,00,00,00,64,00,20,\\
00,01,00,00,00,60,ea,00,00,01,00,00,00,60,ea,00,00
"Group"=""
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\\
6b,00,20,00,4c,00,6f,00,63,00,61,00,6c,00,53,00,65,00,72,00,76,00,69,00,63,\\
00,65,00,00,00
"Objectname"="NT AUTHORITY\\\\LocalService"
"Start"=dword:00000002
"Type"=dword:00000020
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\Config]
"LastClockRate"=dword:0002625a
"MinClockRate"=dword:000260d4
"MaxClockRate"=dword:000263e0
"FrequencyCorrectRate"=dword:00000004
"PollAdjustFactor"=dword:00000005
"LargePhaseOffset"=dword:02faf080
"SpikeWatchPeriod"=dword:00000384
"HoldPeriod"=dword:00000005
"LocalClockDispersion"=dword:0000000a
"EventLogFlags"=dword:00000002
"PhaseCorrectRate"=dword:00000001
"MinPollInterval"=dword:0000000a
"MaxPollInterval"=dword:0000000f
"MaxNegPhaseCorrection"=dword:ffffffff
"MaxPosPhaseCorrection"=dword:ffffffff
"UpdateInterval"=dword:00007530
"AnnounceFlags"=dword:0000000a
"MaxAllowedPhaseOffset"=dword:0000012c
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\Parameters]
"ServiceMain"="SvchostEntry_W32Time"
"ServiceDll"=hex(2):43,00,3a,00,5c,00,57,00,49,00,4e,00,44,00,4f,00,57,00,53,\\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,77,00,33,00,\\
32,00,74,00,69,00,6d,00,65,00,2e,00,64,00,6c,00,6c,00,00,00
"Type"="NTP"
"NtpServer"="ntp2d.mcc.ac.uk,0x1"
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\TimeProviders]
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\TimeProviders\\NtpClient]
"Enabled"=dword:00000001
"InputProvider"=dword:00000001
"AllowNonstandardModeCombinations"=dword:00000001
"CrossSiteSyncFlags"=dword:00000002
"ResolvePeerBackoffMinutes"=dword:0000000f
"ResolvePeerBackoffMaxTimes"=dword:00000007
"CompatibilityFlags"=dword:80000000
"EventLogFlags"=dword:00000001
"LargeSampleSkew"=dword:00000003
"DllName"="C:\\\\WINDOWS\\\\system32\\\\w32time.dll"
"SpecialPollTimeRemaining"=hex(7):6e,00,74,00,70,00,32,00,64,00,2e,00,6d,00,63,\\
00,63,00,2e,00,61,00,63,00,2e,00,75,00,6b,00,2c,00,37,00,61,00,65,00,38,00,\\
39,00,33,00,61,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\\
00,00,00,00,00
"SpecialPollInterval"=dword:00000e10
[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\W32Time\\TimeProviders\\NtpServer]
"InputProvider"=dword:00000000
"AllowNonstandardModeCombinations"=dword:00000001
"DllName"="C:\\\\WINDOWS\\\\system32\\\\w32time.dll"
"Enabled"=dword:00000000
Other UK time servers:
NTP Server Hostname IP Address Use DNS Location NTP Server Synchronisation
chronos.csr.net 194.35.252.7 Yes Computing Systems Research Ltd. UK NTP V4 primary (Odetics GPS), Sun/Sparc Solaris 2.6
ntp.my-inbox.co.uk 81.168.77.149 No Falmouth, Cornwall, UK NTP V4.2.0 primary (MSF Radio Clock Receiver), Trustix Linux
ntp2.sandvika.net 194.164.127.6 No Telehouse Europe, London E14 UK NTP V4 secondary Sun UltraSPARC Solaris 8
ntp2d.mcc.ac.uk 130.88.203.12 Yes University of Manchester, Manchester, UK NTP secondary (S2), SGI/Irix
ntp2c.mcc.ac.uk 130.88.200.4 Yes University of Manchester, Manchester, UK NTP secondary (S2), PC/FreeBSD
ntp.exnet.com 194.207.34.9 Yes ExNet Ltd, London, UK NTP secondary (stratum 2), Sun-4/Unix
audaxsystems.co.uk 193.201.200.83 Yes Interhouse London E14 UK NTP V4, SuSE 9.0 (Stratum 1)
ntp1.sandvika.net 194.164.127.5 No
Telehouse Europe, London E14 UK
NTP V4 secondary Sun UltraSPARC Solaris 8
ntp.cis.strath.ac.uk Yes University of Strathclyde, Glasgow, UK NTP V4 secondary
ntp0.sandvika.net 194.164.127.4 No Telehouse Europe, London E14 UK NTP V4 secondary Sun UltraSPARC Solaris 8
From http://www.atomic-clock.galleon.eu.com/ntp-servers/time/ntp-servers-uk.html