{adj. phr.} Not important to the thing being discussed; off the subject; not mattering. * /Perhaps you did stay up late finishing your homework. That's neither here nor there. You still must come to school on time./ * /The boys all like the coach but that's neither here nor there; the question is, "Does he know how to teach football?"/ Compare: BESIDE THE POINT. Contrast: HAVE TO DO WITH, COME TO THE POINT.
NEITHER HERE NOR THERE
Meaning of NEITHER HERE NOR THERE in English
Dictionary of English idioms . Словарь английских идиом. 2012