What's going on here? This contest was held two years ago. Just look at its id: it is 100187. Someone has managed to change its start date (and also to make it invisible for everyone but the author, which is fixed now), but how is it possible? Any permission settings? What if I go and reschedule all the contests in the gym? What if I hide them all? It must be a bug, admins, look into it, please.
P.S. Don't participate if you remember the problems.
UPD. Looks like gym vandals continue their work: 
I did this by accident, while trying to add it to a private group so we can use it as training. Sorry! :(
Hopefully someone has access to logs with the original contest details and can revert my changes?
Edit: Yay, looks like it was fixed.
Such a vandal!!!! kill it with fire!!*
*don't use water from the bucket