We had a lovely dinner. Relaxed for about an hour. I was in the other room when my husband came in upset. I asked him what happened. He said when he was making 2 of many bottles of water, he took out a dish and proceeded to make breakfast. After he had completed his preparation, he realized that he had just eaten dinner and it was not morning.
I don't really have any other suggestions.
Goggle MEMORY CLOCKS. I got Dad one about a year ago and he loves it. It spells out the time, day, month and year in big digital letters and tells if it's am or pm. If the dementia is not too advanced these clocks can really help.