if someone bought me a pin today, and i entered it on saturday for instance, would it give me a month from saturday or take 2 days off? or just not work?

if someone bought me a pin today, and i entered it on saturday for instance, would it give me a month from saturday or take 2 days off? or just not work?
A month from when you enter the digits.
Therefore a month from saturday.
I do believe pins have a set number of days not how many are in the month is. My last pin was around 37 days I think.
ty pal
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