The MacOs has the standard UNIX suite of commands.

ntpdate - set the date from an NTP server.
ntpd - run an NTP server (requires a config file to list NTP peers to use Also 
if you use ntpd you should ensure it gets autostarted via launch or rc  init 
files.
ntpdc and ntpq  -  commands to query and control ntp daemons both locally and 
remotely.

I use to run ntpdc  status 127.0.0.1  on login each morning to ensure my 
Network of time peers were all behaving.

Jonathan

On Jun 16, 2011, at 7:44 PM, Tim Kilburn wrote:

> Hi,
> 
> Yes the MacOS will do a regular time synchronization with whatever NTP server 
> you have set it to.  This is set in the Date & Time System Pref in the 
> regular GUI.  Anything that you can do with the GUI you can usually do in the 
> Terminal, so I would expect that there is but I'm not familiar with it.  I'll 
> look into it and see what I can find.
> 
> Later...
> 
> On 2011-06-16, at 5:25 PM, .dan. wrote:
> 
>> 
>> Does the mac os do a regular time update from the net to keep it's clock 
>> current?
>> 
>> Does anyone know if there is a command for use in the terminal to do this?
>> 
>> 
>>                              XB
>>                               IC|XC
>> 
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> 
> Tim Kilburn
> Fort McMurray, AB Canada
> 
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