Strange issue with 3in1 script

I’ve installed the latest 3in1 script but I have a strange problem!
Tn the middle tab (named "Next 3 hours), I don’t get the today’s forecast, it just starts from Tomorrow (next day).
The other two tabs are ok. Here’s the test page:

http://www.meteothes.gr/wxsim_wxall/sivu2.php

Any ideas how to fix this? I have checked the script and wxsim but everything looks fine (I’m sure that something is not!).

Thanks,

Thanos

Edit: It appeared at 3:00 am! Something happens during day change! #-o