To answer your question, Jessica, most of the time, it gave us comfort, as the day had met our expectations. Occasionally (or more often), yes, sarcasm took over (like it often does) and references to our respective “OK days” were followed by updates about the various annoyances we had encountered. Sometimes, we were pleasantly surprised to report that the day had been SPECTACULAR, with a lovely story to accompany the proclamation.
I have found that an accessible tool to accomplishing an OK day is being able to say the following words: YOU MAY BE RIGHT. Billy Joel nailed that one.