Day count bug

I have a world where I play with my friends in LAN, and the day count was around 165 when I

left my character AFK during the night in order to let my farms running, when I came back in the morning and now the Minecraft day count is 27

 

I'm confused, cause I've never seen it happening before and even if this doesn't affect my gameplay, I do like to have that information about my world

 

The local difficulty didn't drop, actualy it raised up

 

Idk if this is a bug or now it is suppose to reset at some point but I'm reporting anyway

 

Thanks for reading