How to find out number of Fridays in a month?

I guess I can use lweekdate and nweekdate. Just wondering if there is a faster way to do this.

Answer 1

[Stephen23]

Here is a really simple approach using CALENDAR():

M = calendar(2022,8);
N = nnz(M(:,6))

N = 4

Otherwise you could try using a DATETIME array:

D = datetime(2022,8,1);
V = D:D+calmonths(1)-caldays(1);
N = nnz(weekday(V)==6)

N = 4

Answer 2

[Cris LaPierre]

Not sure what your current code is, but what about something like this using weekday?

year = 2022;
month = 4;

dt = datetime(year,month,1):caldays(1):dateshift(datetime(year,month,1),'end',"month");
dys = weekday(dt)

dys = 1×30

6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7

nFr = sum(dys==6)

nFr = 5