NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Wright's "Certaine Errors In Navigation" is available
From: Gary LaPook
Date: 2007 Dec 7, 12:09 -0800
From: Gary LaPook
Date: 2007 Dec 7, 12:09 -0800
Gary writes: It is interesting to compare Wright's almanac with the modern one. The sun's declination today, December 7, 2007 at noon in England is 22� 35.7' south. If we were using Wright's almanac for the same day, which would be November 27th in the column for 1607 (found on page 118), we get his value of 22� 38' south which is close enough for government work. In comparing Wright's almanac with the modern one you must subtract 10 days from his tabulation since England did not change to the Gregorian calendar until September 25, 1752 while most Catholic countries changed on October 5, 1582. (This caused me much confusion when I first looked at his almanac almost thirty years ago since I assumed that Wright was also using the Gregorian calendar since he published 17 years after that calendar went into effect.) Remember that the letter "s" was printed in 1599 with a character that looks like the modern letter "f" and that the letters "u" and "v" are often interchanged. Gary On Dec 6, 11:54 am, glap...@pacbell.net wrote: > Gary LaPook writes: > > I now have a complete copy of "Certaine Errors In Navigation" in PDF > format and can email it off list to anyone who might want a copy. It > is a delightful book to read, Mr. Wright sounds like a thoroughly > modern man. > > gl --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
