All lines of of the New York City Subway are unavailable during weekeneds.
The system has operated 24/7 service every day of the year (barring emergencies and disasters) throughout most of its history; since May 6, 2020, it has been temporarily closed to the public from 1 a.m. to 5 a.m. to disinfect trains and stations due to the COVID-19 pandemic in New York City. 
