Solar max value for this lat/date problem

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1

I think I have a problem but cant find anything wrong with my setup. Here in the UK it is 08.50am just a tad under an hour after sunrise which my VP says was 07.57. The current WD max value for this lat/date is reading 0. Now no way can this be correct. It must now be more than 0. I have my date and time correct on my PC, in WD and in the VP - all double checked. I have my lat/long set correctly in both WD and VP - 01.26.25E 51.21.48N. I do NOT have daylight savings ticked and the minute offset is set to zero. It just seems to me from observing the values yesterday that WD is about 1 hour behind, as it maxed out yesterday at just after 13.00hrs surely an hour after solar noon! At 09.02 this morning WD just calculated a value of 1 w/m2 for this lat/date!

Can someone suggest if it is me or is there a bug in WD?

2

so, if its 1 hour behind, for solar noon, try setting the minute offset as -60
(as solar noon and a countries time zone can be differrent(
try that and see how it behaves

3

All that has done is set back the max solar value to 0. So that is not the problem.

4

I think you must have meant +60 in the offset, as that has increased the max solar value to a much more reasonable value for my location. I dont understand why I need an hour offset though since you must base your calculations on lat and long, and sunrise/sunset times without it are correct!

5

try this link, froim another thread:
http://www.srrb.noaa.gov/highlights/sunrise/sunrise.html

6

Per that site his solar noon is at 11:51 (he’s only 1.5 deg E of Greenwich). I’ve been trying to make sense of his numbers for a couple of days, and now mine aren’t making much sense either :frowning: