Convert Odd DateTime String

odd.java

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;

public class Main {
	public static void main(String[] args) throws ParseException {

		final String dateTime = "20240310 120600.000";
		final String format = "yyyyMMdd HHmmss.000";

		// format incoming date/time string using custom format
		SimpleDateFormat sdf = new SimpleDateFormat(format);
		Date date = sdf.parse(dateTime);

		// convert standard Java.Util.Date object to LocalDateTime using system TimeZone
		LocalDateTime localDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();

		// output passed in date minus 14 hours (shows previous day)
		System.out.println(localDateTime.minusHours(14));

	}
}