My PC is set correctly, however, the calender is a day behind.

Right click your clock and adjust time zone.Make sure your
Time Zone and Internet Timer are both ticked.

it should be auto adjusted.so i reckon your pc clock and date needs changing right klik on your clock in the bottom right hand of your screen. its all self explanatory from there.good luck

In Calendar, look in options (top right) and then set time zones. You need to set it to one of the GMT+1 zones - mine is in Britain Ireland Portugaul and shows Monday at the moment.