Hi guys

Need some help to compare two columns with Date/Time data. The goal is to identify and count the studies done the same day as ordered but before the 19:00 hours. I have two columns that include Dates/Times for each study ( but I also can generate separate columns for date and time if needed ) and will like a formula or a code that allow me to identify all the studies that were ordered one day before the 19:00 but was done the next day for whatever reason .

Attached is a screenshot with explanation of my problem. I did try to use conditional formatting but didn't work.
Any help is very welcome...
Thanks
Feli
SAME DAY AS ORDER.jpg