Lookup to find multiple occurrences

Hi and thanks for taking the time to read,

I have been given a series of spreadsheets output from an attendance system and I need to identify how many people started at given times each day during the year (there are multipe years).

I know I can't use VLOOKUP as this will only find the first occurance; I think that a mix of INDEX, MATCH, LOOKUP and probably a couple of others might do the trick but, to date, I just can't get me head around arrays and match & index.

I'm sure it's an easy formula for most people ... just that I'm a bit thick! Can someone help, please?

I've added a sample to help explain (including the hoped for output