import java.time.LocalDate;
import java.time.LocalTime;
import java.time.Month;
import java.time.ZoneId;
import java.time.ZonedDateTime;
 
class Main {
    public static void main(String[] args) {
        // Using the default ZoneId set to your JVM i.e. it is the same as
        // ZonedDateTime.now(ZoneId.systemDefault())
        ZonedDateTime nowInDefaultZone = ZonedDateTime.now();
        System.out.println(nowInDefaultZone);
 
        // Using a specified ZoneId. Note: India does not observe DST
        ZonedDateTime nowInIndia = ZonedDateTime.now(ZoneId.of("Asia/Kolkata"));
        System.out.println(nowInIndia);
 
        // ZoneId.of("America/New_York") observes DST
        ZoneId zoneId = ZoneId.of("America/New_York");
 
        // A date-time in ZoneId.of("America/New_York") during DST
        ZonedDateTime zdtNyDuringDST = ZonedDateTime.of(
                LocalDate.of(2024, Month.DECEMBER, 20),
                LocalTime.MIN,
                zoneId);
        System.out.println(zdtNyDuringDST);
 
        // A date-time in ZoneId.of("America/New_York") outside DST period
        ZonedDateTime zdtNyOutsideDST = ZonedDateTime.of(
                LocalDate.of(2025, Month.MAY, 20),
                LocalTime.MIN,
                zoneId);
        System.out.println(zdtNyOutsideDST);
    }
}

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