Counting Time values from multiple cells (not a range)

Hi all,

I've searched the forums and internet with no luck and hoping someone might be able to help me out.

I have some data stored on a worksheet where I would like to count the amount of times "00:00" appears across multiple cells (A2,D2,G2,J2), I've tried the COUNTIF and COUNTIFS functions with no joy.

Any help would be appreciated.

Thanks LC