Symbol Description a AM or PM d Day of month (1-31) h Hour in AM/PM (1-12) k Hour in day (1-24) m Minute in hour (0-59) s Second in minute (0-59) w Week of year (1-52) y Year z Time zone D Day of year (1-366) E Day of week (for example, Thursday) F Day of week in month G Era (that is, AD or BC) H Hour in day (0-23) K Hour in AM/PM (0-11) M Month S Millisecond in second W Week of month (1-5) Z Time zone in RFC822 format