Thank you, Patrick. The link you sent shows that the designer clearly considered the time-variation problem. His comments sound like a fair enough conclusion to me:
"I would say that it is perfect if you recognize the plus or minus 12 time second difference for 11:11:11 a.m." > On Jan 19, 2017, at 1:05 PM, sundial-requ...@uni-koeln.de wrote: > > Date: Thu, 19 Jan 2017 17:59:21 -0000 > From: "Patrick Powers" <patrick_pow...@compuserve.com > <mailto:patrick_pow...@compuserve.com>> > To: "Sundial List" <sundial@uni-koeln.de <mailto:sundial@uni-koeln.de>> > Subject: Re: Unusual bi-annual sundial > > John, > > There is also this that describes (a little) the thinking that was behind the > way they attempted to accommodate the small changes that still occur year to > year. > > http://www.onlineatanthem.com/news/memorial-science > <http://www.onlineatanthem.com/news/memorial-science> > > Patrick > > > From: John Goodman > Sent: Thursday, January 19, 2017 5:01 PM > To: Frank King ; Sundial List > Subject: Re: Unusual bi-annual sundial > > Thank you, Frank. You?ve sharpened my vague suspicions with mathematical > clarity. > >> On Jan 19, 2017, at 11:33 AM, Frank King <f...@cl.cam.ac.uk >> <mailto:f...@cl.cam.ac.uk>> wrote: >> >> OK, take a deep breath and see what we are up against... >
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