import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
class Playground {
public static void main(String[] args) {
DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS");
LocalDateTime endDate = LocalDateTime.now().truncatedTo(ChronoUnit.DAYS).plusHours(23).minusNanos(1L);
LocalDateTime startDate = endDate.minusDays(1).plusNanos(1L);
System.out.println("Start Date: " + startDate.format(format));
System.out.println("end Date: " + endDate.format(format));
}
}