Contest start time is not showing up correctly in my Firefox.
This link from http://mirror.codeforces.com/contests/802 start time is not showing up correctly: http://timeanddate.com/worldclock/fixedtime.html?day=28&month=5&year=2017&hour=11&min=5&sec=0&p1=166
If you add www, it works okay: https://www.timeanddate.com/worldclock/fixedtime.html?day=28&month=5&year=2017&hour=11&min=5&sec=0&p1=166