So I started a hardcore world on minecraft and I want to know how long i've played it, (in minecraft days) are there any tools or mods that can show me this?
It's always a good idea to backup your world save before using a new mod, in case there are any issues. One option is to use Single Player Command (search the forum.) When you use the command " /time day " (without quotations) it will say: "The current time is 06:00 on day XX "
IF you are playing on pc, press F3 and under Local Difficulty, it will state the day in parenthesis. Hope this helped!