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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Basics of computing sunrise/sunset
From: Christian Scheele
Date: 2009 Jun 18, 12:25 +0200
From: Christian Scheele
Date: 2009 Jun 18, 12:25 +0200
"Note that if( cos LHA > 1 ) there is No phenomena at the place(lat, lon)" Right, I assume that would be at the poles when the sun is at declination in the opposite hemisphere. "The Almanaque N�utico, gives the following values for the zenith distance: dz = 90� - Ho Sun: 90.8 � Sunrise/sunset 96 � civil twilight 102 � nautical twilight Moon: 90.57 + (SD-PHE)/60� moonrise/moonset Planets & stars: 90.57 �" Thanks for sharing this. I'll visit your website. Regards, Christian Scheele --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
