Hi fellow Weathercatters, did this issue ever get resolved for you? I too am having difficulty figuring out why the sunrise and sunset times are off by about 7 minutes for me. I have compared the results of Weathercat to several different sources and while the 3rd party sources are all in agreement, Weathercat seems to be off by about 7 minutes. I should mention that the length of sunlight seems to be correct though. It looks like at least one person switched computers to fix. Unfortunately, I can't switch servers, I only have one!
Here's a dumb question, does elevation play into the calculation?
Thanks!
188.4 m
40? 36.217' N
122? 21.180' W
Weathercat: Sunrise 6:46 am, Sunset 7:44 pm
Weatherunderground (and other 3rd parties): 6:39 am, Sunset 7:37 pm