Originally Posted by
Mr Albert Ross
Do you actually believe that?
If you are on "3 full calendar months notice period" and you wanted your last day of work to be 10th April, you would hand in your notice on (or by) 10th January. That is how it worked every time I did so.
Oxford Dictionary of English: calendar month a period of time between the same dates on successive calendar months.
Your selective quoting aside that is how it's written in my contract. So, err, yes.