for a single criteria, you could use SUMIF

=SUMIF(Mon!B$1:B$10000,TIME(8,0,0),Mon!H$1:H$10000 )

to use SUMPRODUCT, try this
=SUMPRODUCT(--(Mon!B$1:B$10000=TIME(8,0,0)),Mon!H$1:H$10000)

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Hope this is helpful

Pls click the Yes button below if this post provide answer you have asked

Thank You

cheers, francis

Am not a greek but an ordinary user trying to assist another



"Sasikiran" wrote:

Dear,

I have the data in a sheet "Mon" and i would require to calcuate the total
of the numbers in column H if the corresponding value in column B is 8:00 AM.

I am trying to use the below formula. Please help me in correcting the same.

=SUMPRODUCT((Mon!B$2:B$10000=--"8:00 AM")*(Mon!H$2:H$10000=--1))

Thanks in advance.