Kodak recommended these times with agitation at 30 second intervals:
for HC-110 (dil. B)
65 degrees--4 3/4 minutes
68 degrees--4 1/4 minutes (preferred temperature)
70 degrees--4 minutes
72 degrees--3 3/4 minutes
75 degrees--3 1/4 minutes
for D-76 1:1
65 degrees--8 minutes
68 degrees--7 minutes (preferred temperature)
70 degrees--6 1/2 minutes
72 degrees--6 minutes
75 degrees--5 minutes