import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
 
public class Main {
	public static void main(String[] args) {
		OffsetDateTime odt = OffsetDateTime.parse("2013-09-29T18:46:19.1Z");
 
		System.out.println(odt);
		System.out.println(odt.toString());
		System.out.println(odt.format(DateTimeFormatter.ISO_DATE_TIME));
 
		OffsetDateTime truncated = odt.truncatedTo(ChronoUnit.HOURS);
		System.out.println(truncated);
		System.out.println(truncated.toString());
		System.out.println(truncated.format(DateTimeFormatter.ISO_DATE_TIME));
	}
}

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