Creating a work schedule visualiser

Hello!

I'd like to take a list of dynamic work shift times, 10:00-14:00, 12:00-18:00, etc, and paste them into column A of a sheet which will visually 'map out' the whole day with conditional formatting. The sheet columns would run from the beginning of the day, say 08:00, hourly, until the end of the day. A shift time of 08:00-12:00 pasted into column A would therefore fill in the cells from column 08:00 to column 12:00.

I'm certain this is possible but my research has turned up nothing but incorrect AI slop.

Excel version 2602