Напиши собщение на тему день москвы другу: друга зовут никита

The day of Moskow
-Nikita do you now anything about celebration "The day of Miskow"?
-No,I don't know this holiday.
It is day,when Moskow celebrate its birthday!
-Ok!And when it is?
-I know,that haven't got exact date!But traditionly we celebrate this first or second Saturday in September.