九月份缩写为SEP1、一月份=jan. jan.=january 2、二月份=feb. feb.=february 3、三月份=mar. mar.=march 4、四月份=apr. apr.=april 5、五月份=may may=may 6、六月份=jun. jun.=june 7、七月份=jul. jul.=july 8、八月份=aug. aug.=august 9、九月份=sep. sept.=september 10、十月份=oct. oct.=october