Midwesterner is correct, although it should be noted that there is a small error even after 247 years and it is more accurate to say that the calendar does not really repeat itself ever.
I am not an expert by any means on this topic,but a quick check will show that ever so slowly, Pesach is moving towards the Summer and leaving Spring behind.
It is well known that Tal U’matar in Chutz La’aretz moves a day later every hundred years or so, and eventually will disappear.
There has been much controversy lately about the Luach in the back of the Tur. It is not clear that the Tur prepared it, as there is a mistake in it. The assumption is that the Tur would not have made this mistake. More likely is that at a later date, it was copied by someone else who made this mistake.
All comments about Moshiach arriving before the calendar falls apart will be well intentioned but ignore the facts and miss the point.
Oomis, the 19 year year English-Hebrew birthday thing is cute and works for the short span of our lives for most people , but not for everyone.