Router gets reset automatically every day

I solved my own problem (with duct tape, as ususal)!  I noticed that there is a time zone that can be set under the Administration tab.  So I set us up for the Bangkok zone.  Now my router resets itself at just a few minutes before midnight when no one is in my business to use the internet. We can now conduct business as usual at the busy noon hour thoughout the entire network without interruption. 

The whole phenomenon is strange because the settings are to be up all day, every day but it faithfully resets exactly every 24 hours.  There must be a setting somewhere that I am missing, but I won't look for it unless somone reads this and figures it out or until my Bangkok setting stops working.