<div dir="ltr">None of the above in the house (or, I guess, in this residential area, near midnight);<br>15 minutes worth, in just a few hours, would be LOTS of stray cycles,<br>and clocks don't show any long-term drift <div>but short-term wander of power-cycle-counting clock,<div> vs clock supplied with time reference, eg cable)</div><div>is quite evident, could be +/-10 seconds in a day but</div><div>don't think I've ever ever seen total long-term over 20.</div></div><div><br></div><div>So I guess the power co is still inserting TEC's..</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 12, 2019 at 12:08 PM Jerry Durand via Stagecraft <<a href="mailto:stagecraft@theatrical.net">stagecraft@theatrical.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<font face="Arial">Depending on the type of clock, an arc, series
wound motor, big dimmer on the line. If they count line cycles
they would see extra events.</font><br>
<br>
<div class="gmail-m_7013106258073641223moz-cite-prefix">On 6/12/19 5:40 AM, Dan Sheehan via
Stagecraft wrote:<br>
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<div>What kind of a power line event could cause</div>
<div>*three* clocks to show power failure AND all be approx 15
minutes *ahead* of time?</div>
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-- <br>
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<div>...Dan Sheehan<br>
Fixer of things that break</div>
<div>TD Walpole (MA) Footlighters<br>
</div>
</div>
</div>
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<pre class="gmail-m_7013106258073641223moz-signature" cols="72">--
Jerry Durand, Durand Interstellar, Inc.
<a class="gmail-m_7013106258073641223moz-txt-link-abbreviated" href="http://www.DurandInterstellar.com" target="_blank">www.DurandInterstellar.com</a>
tel: +1 408 356-3886
@DurandInterstel
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>...Dan Sheehan<br>Fixer of things that break</div><div>TD Walpole (MA) Footlighters<br><br></div></div></div></div></div></div></div>