/* 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.* ;


/* 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 = "2019-12-23 13:35:00".replace( " " , "T" ) ;
	    LocalDateTime ldt = LocalDateTime.parse( input ) ;
	
	    ZoneOffset offset = ZoneOffset.ofHours( -5 ) ;  // Five hours before UTC.
	    OffsetDateTime odt = ldt.atOffset( offset ) ;
	    
	    System.out.println( "odt.toString(): " + odt ) ;
	    
	    System.out.println(
	    
		    LocalDateTime.parse( 
		        "2019-12-23 13:35:00".replace( " " , "T" )
		    )
		    .atOffset(
		        ZoneOffset.ofHours( -5 )
		    )
		    .toString()
		    
	    );
    
	}
}