[ntp:questions] 2036 rollover

David Mills mills at udel.edu
Tue Feb 16 19:28:43 UTC 2010


As stated in the online white papers, as reported in the new book 
edition and confirmed by actual experiment, if the NTP clock is set 
within 68 years of UTC time, it will synchronized correctly, even if the 
correction spans a rolloever epoch. However, this requires means to 
convert UTC time to NTP era and timestamp format, and those Unix systems 
known to me will rollover themselves in 2038, unless something is done 
about it.

Davejt wrote:

>Hello everybody,
>I would like to be sure that all the systems synchronised by the ntp
>servers on the LAN won't encounter problem due to the NTP timestamp
>rollover in 2036.
>Has this issue already been resolved a long time ago, and should I
>consider that all the ntp daemon available today are not concerned by
>this possible problem ?? Should I specify a minimum version of ntp
>daemon ??
>Maybe the answer of my question is already contained in the web page
>"The NTP Era and Era Numbering" dedicated to this subject, but my
>english or maybe my technical knowledge don't enable me to be sure.
>Thank you,
>questions mailing list
>questions at lists.ntp.org

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