Why is the ninth month called September?
Old English get, gieta "till now, thus far, earlier, at last, also," an Anglo-Frisian word (cf. Old Frisian ieta, Middle High German ieuzo), of unknown origin; perhaps connected to PIE pronomial stem *i- (see yon). The meaning in other Germanic languages is expressed by descendants of Proto-Germanic *noh- (cf. German noch), from PIE *nu-qe- "and now."