回复：回复：回复：回复：回复：回复：回复：急问皮匠老师还是8老师关于I-140的expereince letter

You may ask your director give you a new verfication letter with correct date if convenient and if you worry too much. But I still think two day difference, especially 15/5 was Friday and 17/5 was Sunday is not matter and USCIS will not care about it.