flying dog Posted April 2, 2011 Share Posted April 2, 2011 Ok, question: Sunrise and Sunset times are calculated from the Lat/Long and the date. But this illusive "Start of daylight" and "End of daylight" times are difficult. Indulge me: (Yeah, I am probably wrong) If you live on the equator, you will get 2 days a year when the sun is above you - the equinixes. Between there and 23 degrees N/S you would also get 2 days a year of the same. Beyond 23 degrees N/S, you yould only get one day. That would be at the solstisesessses. But looking at my old SOD/EOD chart the day with the most daylight (in Sydney) is not the summer solstis. Yeah, people have tried to explain it before, but I still am missing something. Maybe the desire to learn - as it has been said - or maybe just the brains to undertand it. Either way, I'm still confused. Could someone indulge me how this works? Sore, I also appreciate if there are mountains to the east/west it would change the SOD/EOD times. But for now, I'm saying it is level ground around you. Link to comment Share on other sites More sharing options...
skyfox1 Posted April 2, 2011 Share Posted April 2, 2011 And you say your confused !!!!!!!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
flying dog Posted April 2, 2011 Author Share Posted April 2, 2011 So..... Wouldn't the length of twilight be related to the latitude and date? Therefore, an equation would/could/should be possible Link to comment Share on other sites More sharing options...
Guest davidh10 Posted April 2, 2011 Share Posted April 2, 2011 Hey FD. If you thought you were confused before... Here's some bed time reading. I think I'll stick with using NAIPS. Link to comment Share on other sites More sharing options...
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