Jan,

Put this formula in C6, and copy down to C91 and across

=SUMPRODUCT((C$1=TIME(ROW(C6)-6,0,0))*(C$1<TIME(ROW(C6)-5,0,0)))*C$4

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HTH

Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)

"Jan" wrote in message
...
Hi to all
This is my basic spreadsheet
C1 Production Start time
C2 Produstion Stop time
C3 Run time (C2-C1)
C4 Items per Hour
C5 Total production (C3*C4)
C6-C29 (24 hours of the day) I would like the items produced that hour
based on start time and stop time. What formula would work for me?
Thank you so very much!
Jan