/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.* ;
import java.time.format.* ;
import java.time.temporal.* ;
import java.time.chrono.* ;
import java.time.zone.* ;
 
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Instant instant = Instant.parse( "2020-12-30T17:30:00Z" ) ;
 
		ZoneId zHongKong = ZoneId.of( "Asia/Hong_Kong" ) ;
		ZonedDateTime zdtHongKong = instant.atZone( zHongKong ) ;
 
		ZoneId zLosAngeles = ZoneId.of( "America/Los_Angeles" ) ;
		ZonedDateTime zdtLosAngeles = instant.atZone( zLosAngeles ) ;
 
		Locale locale = new Locale( "en" , "HK" ) ;
	    DateTimeFormatter f = DateTimeFormatter.ofLocalizedDateTime( FormatStyle.SHORT ).withLocale( locale ) ;
	    String output = zdtHongKong.format( f ) ;
 
		System.out.println( "Instant.toString(): " + instant ) ;
		System.out.println( "zdtHongKong.toString(): " + zdtHongKong ) ;
		System.out.println( "zdtLosAngeles.toString(): " + zdtLosAngeles ) ;
		System.out.println( "output: " + output ) ;
	}
}

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