De or het noodplanning?

The correct Dutch article is:

de noodplanning

Rule Words ending in -ing: almost always de. See the rule

How to use noodplanning

the noodplanningde noodplanning
this noodplanningdeze noodplanning
that noodplanningdie noodplanning
our noodplanningonze noodplanning
your noodplanningjouw noodplanning
every noodplanningelke noodplanning
which noodplanning?welke noodplanning?
a big noodplanning / the big noodplanningeen grote noodplanning, de grote noodplanning