import java.time.*;
 
public class Main {
    public static void main(String[] args) {
        ZonedDateTime zdt = ZonedDateTime.of(
                LocalDate.of(2011, Month.MARCH, 27),
                LocalTime.of(2, 0),
                ZoneId.of("Europe/Prague")
        );
        System.out.println(zdt);
 
        // If you want to convert to a different zone, use withZoneSameInstant
        ZonedDateTime zdt2 = zdt.withZoneSameInstant(ZoneId.of("Etc/UTC"));
        System.out.println(zdt2);
 
        // However, there is another way to do it for UTC. You can obtain an Instant
        // from a ZonedDateTime. An Instant is a point in time independent of any
        // time zone. But for practical purposes, we need a reference time zone.
        // UTC is used as the reference.
        Instant instant = zdt.toInstant();
        System.out.println(instant);
    }
}

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