The most asked question by every Police officer and no doubt anyone who works a shift pattern has got to be "what day is it?" Dates, yes - days? not a clue. I only ever say good morning to people as it's only sensible to say good morning after you've been asleep and it either has just been, or soon will be morning again anyway. I still get corrected when I say "see you tomorrow" after finishing a night duty when the next shift starts again that evening. 30 odd years of this can't be good for the system.