If that is teh case, try this...
A
B
C
D
1
 Sales intervals
2
1/1/2016
0
3
1/1/2016
1
2
2
4
1/2/2016
0
5
1/2/2016
11
2
2
6
1/3/2016
0
7
1/3/2016
0
8
1/3/2016
0
9
1/3/2016
0
10
1/3/2016
2
5
5
11
1/4/2016
0
12
1/4/2016
6
2
2
13
1/5/2016
3
1
1
14
1/6/2016
0

(I used column D for comparison)...
D2=IF(B2=0,"",COUNTIFS($A$2:A2,A2))
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