NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: "Sun Slow Day" is coming...
From: Nicol�s de Hilster
Date: 2009 Feb 09, 10:37 +0100
From: Nicol�s de Hilster
Date: 2009 Feb 09, 10:37 +0100
frankreed@HistoricalAtlas.com wrote: > So now here's a serious question, which I think would be a good challenge for the calculating folks of NavList. For the year 2009, what is the exact moment when the Sun is slowest? That is, on what day and at what hour of GMT does the Equation of Time reach its minimum value for the year? And how much does this change from year to year? And an easier question, what is that minimum value? > According to my own software SSD should be celebrated around: 11 February 2008, 05:35:30.5 GMT, the equation of time being 14 minutes and 13.92082 seconds. 11 February 2009, 05:28:32.5 GMT, the equation of time being 14 minutes and 13.78019 seconds. 11 February 2010, 05:21:46.0 GMT, the equation of time being 14 minutes and 13.63054 seconds. 11 February 2011, 05:15:06.5 GMT, the equation of time being 14 minutes and 13.47611 seconds. The equation of time seems to decrease over the years. Question that now remains is: how short will it be at it shortest and when will that be? --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---