At 12:41 AM 2/20/99 -0500, you wrote: >Does anyone out there in sundial land have a source that gives the >circumstances of lunar eclipses in 1582? I am trying to help a young man >with a project related to efforts to determine the longitude of Mexico City >in that time period. We need an eclipse that is visible in both Madrid and >Mexico city around 1582. > >Thanks. > >Jim > >James E. Morrison >Astrolabe web pages at: http://myhouse.com/mc/planet/astrodir/astrolab.htm
Jim I firmly believe that longitude of Mexico City did not change much, if at, all since 1582. I would suggest reading the current longitude relative to Greenwich Meridian and converting it to longitude with respect to Madrid or any other place that was used by the Kingdom of Spain at that time. Slawek Slawek Grzechnik 32 57.4'N 117 08.8'W http://home.san.rr.com/slawek
