NY Penal L § 65.15 (2021)
2021 New York Laws PEN - Penal Part 2 - Sentences Title E - Sentences Article 65 - Sentences of Probation, Conditional Discharge and Unconditional Discharge 65.15 - Calculation of Periods of Probation and of Conditional Discharge.

§   65.15  Calculation  of  periods  of  probation  and  of  conditionaldischarge.1. A  period  of  probation  or  a  period  or  additional  period  of   conditional  discharge  commences  on  the  day  it is imposed. Multiple   periods, whether imposed at the same or at different  times,  shall  run   concurrently.2.  When  a person has violated the conditions of his or her probation   or conditional discharge and is declared delinquent by  the  court,  the   declaration of delinquency shall interrupt the period of the sentence as   of  the  date  of  the  delinquency and such interruption shall continue   until a final determination as to the delinquency has been made  by  the   court  pursuant  to  a hearing held in accordance with the provisions of   the  criminal  procedure  law.  Any  order  for  the  installation   and   maintenance  of a functioning ignition interlock device imposed pursuant   to section 60.21 of this title shall remain  in  effect  throughout  the   delinquency and the court may extend the period of such installation and   maintenance  by  the  period of the delinquency; provided, however, that   the defendant shall get credit for  any  period  where  the  device  was   installed and maintained during the delinquency.* 3.  In  any case where a person who is under a sentence of probation   or  of  conditional  discharge  is  also  under  an   indeterminate   or   determinate  sentence of imprisonment, imposed for some other offense by   a court of this state the service of the sentence of imprisonment  shall   satisfy the sentence of probation or of conditional discharge unless the   sentence  of  probation  or of conditional discharge is revoked prior to   the  next  to  occur  of  parole  or  conditional  release   under,   or   satisfaction  of,  the sentence of imprisonment. Provided, however, that   the service of an indeterminate or determinate sentence of  imprisonment   shall  not  satisfy a sentence of probation if the sentence of probation   was imposed at a time when the sentence of imprisonment had one year  or   less to run.* NB Effective until September 1, 2023* 3.  In  any case where a person who is under a sentence of probation   or of conditional discharge is also under an indeterminate  sentence  of   imprisonment,  or  a  reformatory sentence of imprisonment authorized by   section 75.00, imposed for some other offense by a court of  this  state   the  service  of the sentence of imprisonment shall satisfy the sentence   of  probation  or  of  conditional  discharge  unless  the  sentence  of   probation  or  of  conditional discharge is revoked prior to the next to   occur of parole or conditional release under, or  satisfaction  of,  the   sentence  of  imprisonment.  Provided,  however,  that the service of an   indeterminate or  a  reformatory  sentence  of  imprisonment  shall  not   satisfy a sentence of probation if the sentence of probation was imposed   at a time when the sentence of imprisonment had one year or less to run.* NB Effective September 1, 2023