[maratc]

I don't have current time display on my microwave, it doesn't hinder my microwave performance in any way, so that problem doesn't exist for me.

[bitsandboots]

Sure the performance isnt hindered. The microwaves will keep microwaving. The food will just be blasted into an inedible state.

Dealing with this right now; At someone's place with such a dial microwave and they work around its incredible lack of precision at the consequence of burned or frozen food.