Java tutorial
import java.time.Instant; import java.time.ZonedDateTime; import java.time.temporal.ChronoUnit; public class Main { public static void main(String[] args) { Instant instant = Instant.parse("2014-12-03T10:15:30.00Z"); ZonedDateTime l = ZonedDateTime.now(); System.out.println(instant.until(l, ChronoUnit.DAYS)); } }