Re: Unusual bi-annual sundial

Hi Geoff, Your most interesting ‘penumbral’ comment also raises another possibility that this could be a tad more interesting if we can believe a ‘throw away’, and not fully explained, comment about the monument which suggests a question that there might be still more to the design than we

Re: Circular Spreadsheet Software PS

In message <409A5DB6999C435096D72116E2BBB906@JohnHP8200> "John Pickard" wrote: > Hi Simon, > > You are not the only one who loathes this ”helpful• feature. I almost threw > my Samsung Android phone against a wall and jumped on it in sheer frustration > at

Re: Unusual bi-annual sundial

Dear Roger, Thank you for your comments on the John Dee implementation of the Omar Khayyam calendar. > At one longitude, 77° W, the equinox > would always be on the same day. Is this > God's Longitude? Yes. At that longitude the vernal equinox would invariably fall on 21 March. Sadly, this

Re: Unusual bi-annual sundial

Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Dear Geoff, As so often, you cause me to reflect a little and to refine my analysis... > I wonder if the errors might be masked > by the 32 arc minute solar penumbra. In pondering this "instrument" I made the naive assumption