Malpensa closes tonight for six hours, meaning it suspends air operations. This is a relatively rare event, because blocking usually has an impact on operations.
These days, however, the problem does not arise particularly, given that the movements are still very limited. The scheduled intervention concerns some maintenance operations on the control tower.
In any case: the stop is scheduled tonight from 00.00 to 06.00 on Sunday (22.00-04: 00, for the time of Greenwich which appears in international communications).