[Radiance-general] gendaylit

[Saini, H.]

Hello everyone,

While using gendaylit, I receive the following warning message and error in the outputs:

# gendaylit 5 29 12 -L 925.2 249.348 -a 41.8 -o -12.2333
Warning: sun altitude below zero at time step 5 29 12.00, printing error sky
# Local solar time: 20.86
# Solar altitude and azimuth: -13.2 135.6

But if I use a '+' sign before hour then there is no warning message:

# gendaylit 5 29 +12 -L 925.2 249.348 -a 41.8 -o -12.2333
# Local solar time: 12.00
# Solar altitude and azimuth: 69.7 -0.0

Could you please tell me what would be the possible reason for such behaviour? I want to get solar altitude and azimuth angles based on standard time and not on local solar time.

PS: I am using these Windows command prompt to execute gendaylit.

Thanks,

Hemshikha