Regional settings are set to Bulgarian, and yes I have 24 hours format clock - H:mm:ss; H:mm
BUT I cannot set the time at 13:00 for example. Max time that I can get is 12:59. Now it set to 8:00 and it sends e-mails at 20:00 o`clock.
__________________________________-
I found the solution. I have to add explicitly AM and PM symbols in regional settings which are empty by default. Thanks again.