I'm out of town right now but ill look into this when I get back.
with the weather pulls having to be reworked it is possible that option got over looked.
however the times should be saving and updating.
did you restart PCC after changing the times and Prior to reopening the settings page?
Some options don't take affect until PCC is restarted.
if you open the settings page prior to restarting the old settings will appear and be saved.