Hi ladypowys
I don't know whether they will pick it up, but if you want to inform them - you should do so. Does it matter? Clearly, the contents of what was said are more important than the date - but it is an error, and as you say, it could be significant. Better to contact them and know that you have informed them, than let it worry you.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems