when is the "traditional" jew new year
ראש השנה
rabbis including orthodox jew rabbis and mishna REFUSE to accurately represent jewish tradition
they teach new year that differs from the ancient jews... in second temple era.
josepus book 3 preseved that nisan... the babylonian name after the exile still... nisan was "the start of OUR year." not only for counting months but for start of YEAR and not onnly in moses "40 YEAR" from exiting egypt, in bible, but even as late as josepus after jesus the jews considered "our year" in nisan not like the later mishna which did not accurately represent jewish tradition.