How would a Renaissance-era shopkeeper, in a walled and paved city, notice that they've traveled back in time, right when they wake up, or soon after, like after 5 min and looking outside?
No dead people having returned to life and stuff either...
The time warp happens when they sleep, and they wake up in the same bed...
Personally, I'm doing Fall -> Spring of same year, and weather is similar, so can't use that...
But, I would like something that could be generalized...
Peasants were illiterate and innumerate, so I doubt that a calendar with numbered days would have meant much to them. For example, if they knew their birthday, they would probably know it as "I was born on Saint Anne's day," or something like that. – Ben Crowell 25 mins ago
I agree with Ben Crowell that calendar dates would not have been important. Daily life was structured enough by market days, the sabbath, and feast and saint days that most people would have had a structured sense of the flow of time, but "structured" in a way suitable for pre-industrial culture. (Also, priests would probably know the date.) – two sheds 15 mins ago
... Which will probably be deleted soon?