If you just wanted the total of hours, add column D as a helper to your first sheet :-

=Month(a1)

then you can total for each month with :-

=SUMIF(Sheet1!$D$2:$D$13,9,Sheet1!$C$2:$C$13)-SUMIF(Sheet1!$D$2:$D$13,9,Sheet1!$B$2:$B$13)

Pivot table is the best way to go!!!!!!
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