I need to sum the length of tim in column d: according to the hour in column
B:.

Column B = 8:44:00AM or 8:44AM (from a text file, general format.)
Column D - 16:38, stored as 4:38:00 PM (formatted h:mm, but actually min/sec)

I have already changed B to military with:
VALUE(IF(ISNA(CONCATENATE(LEFT(B3,LEN(B3)-2),"
",RIGHT(B3,2))),"",CONCATENATE(LEFT(B3,LEN(B3)-2)," ",RIGHT(B3,2)))) (Not my
formula, but the damn thing works)

B: is sorted so the hours are in order. so I'm sure there is a better way
than pasting about 2000 formulas in a spreadsheet

Thanks,

Ron