408 scheduling

I cancelled a Thursday scheduled for "12 am - 1am" and opened up slots for Thurs at 12pm, and Fri at 1pm, 2pm, 3p, and 4pm. I also noticed that our other Thursday spots are for "10pm" and "11pm". I didn't email the subjects in case someone else already did... they know it's 10 am and 11 am, right?