Code to count and then reset to 0 or blank out.

Hey,

Not sure if this is possible.

I have a simple count function in D3 - every time there is an entry in A5:A150 it counts up by 1.

=COUNT(A5:A150)

In A5 thru A150 will be a date, is there a way to have D3 reset to 0 and start counting again once the date is not the same as the cell above?

Is there then a way to capture the number in D3 prior to it reseting to 0 ?