Add alternate days in Event Module

Hi Everyone,

when i add any event using module it ask All day but if i want to add events using alternate day how can i do this please tell me or how can i add this feature in my events module....have u understand wat do i mean by ALTERNATE DAY(if my events time will be 19nov to 21 and if i checked on alternate day then there will be event on 19 and 21 there will be no event on 20 because i checked alternate day ).

Thanks ,