关于12 小时制的pm 与 am问题

 'time rule
            '0 ---01  1 1900 12:00AM
            '1 ---01  1 1900  1:00AM
            '2 ---01  1 1900  2:00AM
            '3 ---01  1 1900  3:00AM
            '4 ---01  1 1900  4:00AM
            '5 ---01  1 1900  5:00AM
            '6 ---01  1 1900  6:00AM
            '7 ---01  1 1900  7:00AM
            '8 ---01  1 1900  8:00AM
            '9 ---01  1 1900  9:00AM
            '10---01  1 1900 10:00AM
            '11---01  1 1900 11:00AM
            ''''''''''''''''''''''''
            '12---01  1 1900 12:00PM
            '13---01  1 1900  1:00PM
            '14---01  1 1900  2:00PM
            '15---01  1 1900  3:00PM
            '16---01  1 1900  4:00PM
            '17---01  1 1900  5:00PM
            '18---01  1 1900  6:00PM
            '19---01  1 1900  7:00PM
            '20---01  1 1900  8:00PM
            '21---01  1 1900  9:00PM
            '22---01  1 1900 10:00PM
            '23---01  1 1900 11:00PM
            '[0:0:0,12:0:0) am  12 am,1am----->11am
            '[12:0:0,0:0:0) pm  12 pm,1am----->11pm