import java.time.DayOfWeek;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.temporal.TemporalAdjusters;
import java.time.temporal.WeekFields;
import java.util.Locale;
 
public class Main {
	public static void main(String[] args) {
		// A sample epoch millisecond
		long millis = 1737198329820L;
 
		// Convert epoch millisecond to Instant
		Instant instant = Instant.ofEpochMilli(millis);
 
		// Convert the instant to ZonedDateTime of the applicable ZoneId
		// A sample ZoneId
		ZoneId zoneId = ZoneId.of("America/New_York");
		ZonedDateTime zdt = instant.atZone(zoneId);
		System.out.println("Given date-time: " + zdt);
 
		// Get start of the current week
		ZonedDateTime zdtStartOfTheCurrentWeekUs = getStartOfTheCurrentWeek(zdt, Locale.US);
		System.out.println("Start of the current week: " + zdtStartOfTheCurrentWeekUs);
 
		// Get the start of the next week
		ZonedDateTime zdtStartOfTheNextWeekUs = zdtStartOfTheCurrentWeekUs.plusWeeks(1);
		System.out.println("Start of the next week: " + zdtStartOfTheNextWeekUs);
 
		// Check if your epoch millisecond falls within the week
		if (!zdt.isBefore(zdtStartOfTheCurrentWeekUs)
				&& zdt.isBefore(zdtStartOfTheNextWeekUs)) {
			System.out.println("The given date-time is within the current week");
		} else {
			System.out.println("The given date-time is outside the current week");
		}
	}
 
	static ZonedDateTime getStartOfTheCurrentWeek(ZonedDateTime zdt, Locale locale) {
		ZoneId zoneId = zdt.getZone();
		LocalDate date = zdt.toLocalDate();
		DayOfWeek firstDayOfWeek = date.with(WeekFields.of(locale).dayOfWeek(), 1)
				.getDayOfWeek();
		System.out.printf("1st day of week in %s: %s%n", zoneId, firstDayOfWeek);
		return date.atStartOfDay(zoneId)
				.with(TemporalAdjusters.previousOrSame(firstDayOfWeek));
	}
}

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