The some clocks being ok and some had to be reset could be the ok ones have a battery or large capacitor to bridge short lapses in power. The other possibility is most houses have a 220 volt service(actually 240) that comes in on two 110 volt lines. Both are used for 220 appliances, but one is used for wall outlets. In order to balance the load about half the outlets will be on one leg and half on the other. I've seen more than once one leg coming in be interrupted and the clocks needing to be reset may all be on one leg.
The Sharp carousel microwaves you don't have to turn the food, it's turning all the time. By some king of fucking magic when I open the door and set something on the platter, no mater what time I give it when the time is up that item is exactly where I put it. 30 seconds or 30 minutes or 533 seconds the item is right there.
