Re: Time off by 6 seconds -- MIDRANGE-L

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On Mon, Sep 25, 2023 at 12:31 PM John Yeung <gallium.arsenide@xxxxxxxxx>
wrote:

On Mon, Sep 25, 2023, 1:33 PM Jack Woehr via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

On Mon, Sep 25, 2023 at 11:25 AM (WalzCraft) Jerry Forss <
JForss@xxxxxxxxxxxxx> wrote:

Every week the IBMi is behind by 6 seconds.
Any idea why there would be such a drift?

Because the crystals sold to generate time pulses are off by a few shades
of a Hz which has been the case for 50 years.

But 6 seconds per week is quite a lot. It's much more than I would expect.
Even the chintziest wristwatches do not lose time that fast.

Amusing to speculate.
However, from a practical standpoint, the system provider, a small company
called IBM, recommends you use the NTP support built into the operating
system.
"The generic name time.nist.gov will continue to point to all of our
servers on a round-robin basis, and users are encouraged to access the
service using this name." - NIST <https://tf.nist.gov/tf-cgi/servers.cgi>

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