/* 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
	{
 
    String input = "2020-12-12" ;
    LocalDate ld = LocalDate.parse( input ) ;
 
    ZoneId z = ZoneId.of( "Pacific/Auckland" ) ;
    ZonedDateTime zdtStart = ld.atStartOfDay( z ) ;
    ZonedDateTime zdtEnd = ld.plusDays( 1 ).atStartOfDay( z ) ;
 
    Instant start = zdtStart.toInstant() ;
    Instant end = zdtEnd.toInstant() ;
 
    System.out.println( zdtStart + "/" + zdtEnd ) ;
    System.out.println( start + "/" + end ) ;
 
	}
}

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