B3 = text (A3, "yyyy-mm-dd")
C3 = match ((hours (A3)+ minutes (A3)/60), {0,2,4,6,8, 10, 12, 14, 16,/kloc-.
Two formulas were copied down.
Green areas are filled as needed.
E3 = sum product (($ B3: $ b19 = $ D3) * ($ C3: $ c19 = e $2)) is copied to the yellow area.
Q3=SUM(E3:P3) Copy Down
E20=SUM(E3:E 19) is copied to the right.