C++: Discordian Date

#include <iostream>
#include <algorithm>
#include <vector>
#include <sstream>

//--------------------------------------------------------------------------------------------------
using namespace std;

//--------------------------------------------------------------------------------------------------
class myTuple
{
public:
	void set( int a, int b, string c ) { t.first.first = a; t.first.second = b; t.second = c; }
	bool operator == ( pair<int, int> p ) { return p.first == t.first.first && p.second == t.first.second; }
	string second(){ return t.second; }
private:
	pair<pair<int, int>, string> t;
};
//--------------------------------------------------------------------------------------------------
class discordian
{
public:
	discordian()
	{
		myTuple t;
		t.set( 5, 1, "Mungday" ); holyday.push_back( t ); t.set( 19, 2, "Chaoflux" ); holyday.push_back( t );
		t.set( 29, 2, "St. Tib's Day" ); holyday.push_back( t ); t.set( 19, 3, "Mojoday" ); holyday.push_back( t );
		t.set( 3, 5, "Discoflux" ); holyday.push_back( t ); t.set( 31, 5, "Syaday" ); holyday.push_back( t );
		t.set( 15, 7, "Confuflux" ); holyday.push_back( t ); t.set( 12, 8, "Zaraday" ); holyday.push_back( t ); 
		t.set( 26, 9, "Bureflux" ); holyday.push_back( t ); t.set( 24, 10, "Maladay" ); holyday.push_back( t ); 
		t.set( 8, 12, "Afflux" ); holyday.push_back( t );
		seasons.push_back( "Chaos" ); seasons.push_back( "Discord" ); seasons.push_back( "Confusion" ); 
		seasons.push_back( "Bureaucracy" ); seasons.push_back( "The Aftermath" );
		wdays.push_back( "Setting Orange" ); wdays.push_back( "Sweetmorn" ); wdays.push_back( "Boomtime" );
		wdays.push_back( "Pungenday" ); wdays.push_back( "Prickle-Prickle" ); 
	}

	void convert( int d, int m, int y )
	{
		if( d == 0 || m == 0 || m > 12 || d > getMaxDay( m, y ) ) { cout << "\nThis is not a date!"; return; }
		pair <int, int> p; p.first = d, p.second = m; vector<myTuple>::iterator f;
		f = find( holyday.begin(), holyday.end(), p ); int dd = 0, day, wday, mon,  yr = y +  1166;
		if( d == 29 && m == 2 && isLeap( y ) )
		{ cout << ( *f ).second() << ", Year of Our Lady of Discord " << yr; return; }
		for( int x = 1; x < m; x++ ) dd += getMaxDay( x, 1 ); dd += d; day = dd % 73; wday = dd % 5; mon = dd / 73;
		cout << wdays[wday] << ", " << seasons[mon] << " " << day << ", Year of Our Lady of Discord " << yr;
		if( f != holyday.end() ) cout << " - " << ( *f ).second();
	} 

private:
	int getMaxDay( int m, int y )
	{ int dd[] = { 0, 31, isLeap( y ) ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; return dd[m]; }

	bool isLeap( int y )
	{ bool l = false; if( !( y % 4 ) ) { if( y % 100 ) l = true; else if( !( y % 400 ) ) l = true; } return l; }

	vector<myTuple> holyday; vector<string> seasons, wdays;
};
//--------------------------------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
	string date; discordian disc;
	while( true )
	{
		cout << "Enter a date (dd mm yyyy) or 0 to quit: "; getline( cin, date ); if( date == "0" ) break;
		if( date.length() == 10 ) 
		{
			istringstream iss( date ); vector<string> vc;
			copy( istream_iterator<string>( iss ), istream_iterator<string>(), back_inserter<vector<string> >( vc ) );
			disc.convert( atoi( vc[0].c_str() ), atoi( vc[1].c_str() ), atoi( vc[2].c_str() ) ); cout << "\n\n\n";
		}
		else cout << "\nIs this a date?!\n\n";
	}
	return 0;
}
//--------------------------------------------------------------------------------------------------

Output: