[ntp:questions] Re: NTP4 has 3 different time formats! Namly(32, 64, 128) bits wide

Richard B. Gilbert rgilbert88 at comcast.net
Fri Jul 14 15:18:03 UTC 2006


David J Taylor wrote:

> Danny Mayer wrote:
> 
>>Richard B. Gilbert wrote:
>>
>>>NTP could do worse than to adopt the VMS 64 bit time format.  IIRC it
>>>was a count of 100 nanosecond "ticks" since some date in (I think)
>>>November 1857.
>>
>>18 November, 1857 to be exact! See, I still remember!
> 
> 
> I often wondered why that base was chosen - something to do with the 
> Smithsonian?
> 
> David 
> 
> 
Something to do with the Smithsonian and an astronomer's star catalog.

One suspects that these various base dates were chosen by rolling dice, 
flipping coins, or picking them out of a hat.  They all work.  More or less!




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