Java tutorial
import java.time.Clock; import java.time.Duration; import java.time.Instant; import java.time.ZoneId; public class Main { public static void main(String[] args) { Clock utcClock = Clock.systemUTC(); Clock defaultClock = Clock.systemDefaultZone(); Clock offsetClock = Clock.offset(Clock.systemUTC(), Duration.ofHours(-5)); ZoneId denverTimeZone = ZoneId.of("America/Denver"); ZoneId newYorkTimeZone = ZoneId.of("America/New_York"); ZoneId chicagoTimeZone = ZoneId.of("America/Chicago"); ZoneId losAngelesTimeZone = ZoneId.of("America/Los_Angeles"); Instant instant = Instant.now(defaultClock); Instant instant2 = Instant.now(utcClock); Instant instant3 = Instant.now(offsetClock); System.out.println(instant); System.out.println(instant2); System.out.println(instant3.plus(Duration.ofSeconds(90))); System.out.println(instant3.atZone(newYorkTimeZone)); System.out.println(instant3.atZone(chicagoTimeZone)); System.out.println(instant3.atZone(denverTimeZone)); System.out.println(instant3.atZone(losAngelesTimeZone)); } }