Counting The Number Of Times A Date Appears In A List

the number of days when there were 0 cases
the number of days there was 1 case
the number of days when there were 2 cases.
As yet there are no days in which there were more than 2 cases but there might be in the future.

I have a list of dates when operations took place in that room. On some days the it was not in use, so those dates don't appear in the list. Some days there was 1 case, so that date appears once in the list. On some days there were two cases, so that date appears twice in the list.

What I've done so far is create a pivot table that contains all the dates, then grouped it by day and counted the number of times there was 1 or 2 cases in a day by hand, then subtracted the total to get the days when there weren't any cases.