as I said in earlier CMS versions there were issues with schedule/download time especially regarding 00:00 (midnight).
Either consider update to 1.7.6.
Or change your schedule a little, since you want your scheduled layout to play pretty much all the time.
I would suggest for example:
Start time 17.02.2016 8:00
End Time 30.09.2016 23:50 (basically some date far into the future)
without repeats
I’d suggest this kind of schedule no matter if you will upgrade CMS or not.