DateTimeZone zone = DateTimeZone.forID("Europe/Paris");
		  ProphetChronology prophet = ProphetChronology.getInstance(zone);
		  DateTime x = new DateTime(2020,5,1,16,0, prophet);
		  DateTimeFormatter dtfOut = DateTimeFormat.forPattern("dd-MM-yyyy hh:mm:ss");
		  System.out.println(dtfOut.print(x));
		  DateTime y = x.withChronology(GregorianChronology.getInstance(zone));
		  System.out.println(dtfOut.print(y));