New York Penal Law 70.15 states the following:
1. Class A misdemeanor. A sentence of imprisonment for a class A misdemeanor shall be a definite sentence. When such a sentence is imposed the term shall be fixed by the court, and shall not exceed one year; provided, however, that a sentence of imprisonment imposed upon a conviction of criminal possession of a weapon in the fourth degree as defined in subdivision one of section 265.01 must be for a period of no less than one year when the conviction was the result of a plea of guilty entered in satisfaction of an indictment or any count thereof charging the defendant with the class D violent felony offense of criminal possession of a weapon in the third degree as defined in subdivision four of section 265.02, except that the court may impose any other sentence authorized by law upon a person who has not been previously convicted in the five years immediately preceding the commission of the offense for a felony or a class A misdemeanor defined in this chapter, if the court having regard to the nature and circumstances of the crime and to the history and character of the defendant, finds on the record that such sentence would be unduly harsh and that the alternative sentence would be consistent with public safety and does not deprecate the seriousness of the crime.
2. Class B misdemeanor. A sentence of imprisonment for a class B misdemeanor shall be a definite sentence. When such a sentence is imposed the term shall be fixed by the court, and shall not exceed three months.
3. Unclassified misdemeanor. A sentence of imprisonment for an unclassified misdemeanor shall be a definite sentence. When such a sentence is imposed the term shall be fixed by the court, and shall be in accordance with the sentence specified in the law or ordinance that defines the crime.
4. Violation. A sentence of imprisonment for a violation shall be a definite sentence. When such a sentence is imposed the term shall be fixed by the court, and shall not exceed fifteen days.
In the case of a violation defined outside this chapter, if the sentence is expressly specified in the law or ordinance that defines the offense and consists solely of a fine, no term of imprisonment shall be imposed.