how to create nested if function for military time

A B C D E
4:25:00 c 0:00:00 c
7:00:00 a
15:00:01 b
23:00:00 c


B2=VLookup($A2;$D$2:$E$5;2;1)

Your intervals are not well defined. They overlap.

between 07:00:00 and 15:00:00, then B1 should display "a"
between 15:00:00 and 23:00:00, then B1 should display "b"
between 23:00:00 and 07:00:00, then B1 should display "c"

If A1 = 15:00 what result do you expect? "A" or "B"?

If A1 = 23:00 what result do you expect? "B" or "C"?

If A1 = 7:00 what result do you expect? "C" or "A"?

Based on your last post in this thread, its apparent that you are satisfied with the solution(s) you've received and have solved your question, but you haven't marked your thread as "SOLVED". I will do it for you this time.

In future, to mark your thread as Solved, you can do the following -
Select Thread Tools-> Mark thread as Solved.

Incase your issue is not solved, you can undo it as follows -
Select Thread Tools-> Mark thread as Unsolved.

Also, since you are relatively new to the forum, i would like to inform you that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post which helped you. This adds to the reputation of the person who has taken the time to help you.

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