57. Sussex time service : Guide : ... : ITS : University of Sussex

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Sussex time service

The time service is a campus wide time reference. It is a resilient service that provides an authoritative time source for both server and client synchronisation. It is a stratum-2 service that synchronises with the Janet stratum-1 servers which, in turn, use GPS, MSF, PPS and DCFatime sources. The Janet service also synchronises with other stratum-1 servers around the world.

The time service will typically maintain your local system clock to within a few milliseconds.

Desktop machines

If you wish to configure your machine to use this service please point you date/time control panel (or equivalent) to timehost.sussex.ac.uk.

Windows XP

select Start > Control Panel > Date and Time
select the Internet time tab
tick Automatically synchronise with an Internet time server box
type timehost.sussex.ac.uk in the Server: field
click Apply

Mac OS X

select System Preferences
under System select Date & Time
select the Date & Time tab
tick Set date & time automatically and type timehost.sussex.ac.uk in the associated field

Server machines

If you are running a departmental server of any description you either use the timehost.sussex.ac.uk address as detailed above or you can manually configure your ntp/sntp client to use all three of the Sussex time servers:

ntp0.susx.ac.uk
ntp1.susx.ac.uk
ntp2.susx.ac.uk

Please contact IT Services using the online form if you have any questions.

The time service is a campus wide time reference. It is a resilient service that provides an authoritative time source for both server and client synchronisation. It is a stratum-2 service that synchronises with the Janet stratum-1 servers which, in turn, use GPS, MSF, PPS and DCFatime sources. The JANET service also synchronises with other stratum-1 servers around the world.