Month               月份                代码
January                一月                    F
February               二月                    G
March                  三月                    H
April                  四月                    J
May                    五月                    K
June                   六月                    M
July                   七月                    N
August                 八月                    Q
September              九月                    U
October                十月                    V
November              十一月                   X
December              十二月                   Z