/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.* ;
import java.time.temporal.* ;
 
/* 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 phoneCallStartedUtc = Instant.now() ;  // A moment as seen in UTC.
		ZonedDateTime phoneCallStartedCasablanca = phoneCallStartedUtc.atZone( ZoneId.of( "Africa/Casablanca" ) ) ;
		ZonedDateTime phoneCallStartedTokyo = phoneCallStartedUtc.atZone( ZoneId.of( "Asia/Tokyo" ) ) ;
 
		System.out.println( "phoneCallStartedUtc.toString(): " + phoneCallStartedUtc ) ;
		System.out.println( "phoneCallStartedCasablanca.toString(): " + phoneCallStartedCasablanca ) ;
		System.out.println( "phoneCallStartedTokyo.toString(): " + phoneCallStartedTokyo ) ;
 
		// Store these three values.
		ZoneId zoneIdRome = ZoneId.of( "Europe/Rome" ) ;
		LocalTime restaurantOpening = LocalTime.of( 9 , 30 ) ;  // 09:30 AM.
		LocalDate nextTuesday = LocalDate.now( zoneIdRome ).with( TemporalAdjusters.next( DayOfWeek.TUESDAY ) ) ;
 
		// Do NOT store this next value. Use this next value only on-the-fly at runtime.
		ZonedDateTime momentWhenRestaurantIsExpectedToOpenNextTuesday = 
		    ZonedDateTime.of( nextTuesday , restaurantOpening , zoneIdRome ) ;
 
		System.out.println( "restaurantOpening.toString(): " + restaurantOpening ) ;
		System.out.println( "nextTuesday.toString(): " + nextTuesday ) ;
		System.out.println( "momentWhenRestaurantIsExpectedToOpenNextTuesday.toString(): " + momentWhenRestaurantIsExpectedToOpenNextTuesday ) ;
 
		OffsetDateTime odt = OffsetDateTime.now();
		System.out.println( "OffsetDate.now(): " + odt ) ;
		System.out.println( "OffsetDate.now().minusMonths(1): " + odt.minusMonths(1) ) ;
 
	}
}

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