Yesterday, I have published on CPAN version 0.0506 of DateTime::Event::Sunrise.
The new version has an overhauled precise algorithm. In addition, this algorithm has been tested with external data, obtained by spotting the position of the Sun as given by Stellarium and cross-checking the values with the NOAA's solar calculator. See: https://www.esrl.noaa.gov/gmd/grad/solcalc/ http://stellarium.org/ Contrary to my previous message on 2020-06-19, there is no user parameter to chose the angular speed. Although the code is sufficiently improved to allow a release to CPAN, work is far from completed. I still have much to explain and document, in the "doc" subdirectory of Astro::Sunrise. See the astronomical-notes.pod file in https://github.com/jforget/Astro-Sunrise/blob/master/doc/ But the rhythm will be rather slow, I have other projects in my to-do stack: summer vacation, version 0.0.2 of Raky distribution Date::Calendar::MayaAztec, and many others. Many thanks to all those who have helped me in one way or another. Jean Forget
