get fixed clock at specified hour with java8 time api

import java.time.Clock;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;

public class App {

    public static void main(String[] args) {
    }

    private static Instant getTodayAtHour(int hour) {
        LocalDateTime todayAtSpecifiedHour = LocalDateTime.now().withHour(hour).withMinute(0).withSecond(0).withNano(0);
        ZonedDateTime dt = todayAtSpecifiedHour.atZone(ZoneId.systemDefault());
        Instant instant = dt.toInstant();
        return instant;
    }

    private static Clock get15hsClock() {
        Clock clock15hs = Clock.fixed(getTodayAtHour(15), ZoneId.systemDefault());
        return clock15hs;
    }

}