On what date did Beijing stop heating?

The shutdown time in Beijing is March 15.

The legal heating date in Beijing is1October11May to March1May of the following year, lasting for 4 months. In case of extreme weather, heating can be extended: if the average daily temperature is lower than 5℃ for five consecutive days after March 15, heating can be extended. In case of extreme weather such as heavy snowfall, heating can also be extended, and the heating stop time is not later than March 3 1 day.