There is 1 holiday in March. According to Article 3 of the Law "On Holidays and Memorial Days", March 8 is celebrated as a women's holiday. It is a non-working day. Note that this year March 8 is Sunday.
Thus, in March there are 22 working days and 9 days off.
By the way, according to Article 147 of the Labor Code, the duration of the working day is reduced by one hour on the eve of non-working holidays and memorial days, except for employees working under reduced and part-time working conditions. However, since March 8 is a Sunday, this law will apply only in the case of a 6-day work schedule.
