Experiencing a problem w.r.t. time and pvwattsfunc.
I have a weather data file from California (36 N, 116 W) who times are all in GMT. I presume, I should set the "tz" variable to 0. When I do this, I get a peak POA around solar noon at that location, GMT ~19-20ish which looks about right.
However, there appears to be a bug in which all output from morning hours is cut off completely. MAybe it is a wrap-around issue (or lack of wraparound)? For example, for a lat/lon of 36/-116, which corresponds to CA desert, the GMT hour 0 should be about 7 am local -- the sun should be up. However, the POA returned is zero regardless of what the beam and diffuse are set to.
I notice also that I can set the hour to 24,25,26, in which I get reasonable output -- but those inputs I would have hoped would have triggered error messages as the hour is supposed to be 0-23.
Anyway, two files attached:
1. example that shows the issues
2. picture of POA with fixed beam over a day. You can see that the 'sine wave' is cut off for the morning hours.
