Pattern Result
DateFormat.yMd() -> 7/10/1996
DateFormat('yMd') -> 7/10/1996
DateFormat.yMMMMd('en_US') -> July 10, 1996
DateFormat.jm() -> 5:08 PM
DateFormat.yMd().add_jm() -> 7/10/1996 5:08 PM
DateFormat.Hm() -> 17:08 // force 24 hour time
