hey mojang I have been having an issue on. My it's written that it is day 0 when I have diamond everything.

Hey mojang, I have been having a trouble earlier so the trouble is about the days. I have a world I've been playing on for bout 60 days. And when I wanted to check how many says I was it was written day 0 idk so is there anything that is wrong. So pls answer me fast because I'm scared there's a virus or something idk. I tried sleeping and now it's says "day 1".