You might also take note of the fact that Jesus was what today would be called an Orthodox Jew who would undoubtedly use the same term of reference. There is no record of Jesus ever using a different calendar than the traditional Hebrew calendar which, FYI, has been in use for at least 1,000 years longer than any version of the calendar presently used by most of the world.
You appear to be either incredibly ignorant or incredibly insensitive to others' beliefs if you can't accept that others may believe differently than you do. The whole concept of "PC" is, to be sure, a load of crap at best. But this has NOTHING to do with PC. It is a simple unwillingness by those who believe differently from you to adopt your language and your points of reference. Oh, by the way, it is not intended as an insult to you or your religion - it is merely speaking in terms that are acceptable to the writer and most of his/her intended audience - and it has always been and will always be just that.
You both need to either educate yourselves better, read more carefully or open your minds a bit - or all three.