Почему робот думает, что сегодня выходной?

var russianSpecialWorkingDays = new[]
			{
				new DateTime(2011, 3, 5),
				
				// ÷ñÒ1824641364êÖ0õæ÷http://rts.micex.ru/a254
÷ñÒ1824641364êÖ1õæ÷
				new DateTime(2012, 3, 11),
				new DateTime(2012, 4, 28),
				new DateTime(2012, 5, 5),
				new DateTime(2012, 5, 12),
				new DateTime(2012, 6, 9),
				new DateTime(2012, 12, 29)
			};

			var russianSpecialHolidays = new[]
			{
				new DateTime(2011, 1, 3),
				new DateTime(2011, 1, 4),
				new DateTime(2011, 1, 5),
				new DateTime(2011, 1, 6),
				new DateTime(2011, 1, 7),
				new DateTime(2011, 1, 10),
				new DateTime(2011, 2, 23),
				new DateTime(2011, 3, 7),
				new DateTime(2011, 3, 8),
				new DateTime(2011, 5, 2),
				new DateTime(2011, 5, 9),
				new DateTime(2011, 6, 13),
				new DateTime(2011, 11, 4),

				// ÷ñÒ1824641364êÖ2õæ÷http://rts.micex.ru/a254
÷ñÒ1824641364êÖ3õæ÷
				new DateTime(2012, 1, 2),
				new DateTime(2012, 2, 23),
				new DateTime(2012, 3, 8),
				new DateTime(2012, 3, 9),
				new DateTime(2012, 4, 30),
				new DateTime(2012, 5, 1),
				new DateTime(2012, 5, 9),
				new DateTime(2012, 6, 11),
				new DateTime(2012, 6, 12),
				new DateTime(2012, 11, 5),
				new DateTime(2012, 12, 31),

				// ÷ñÒ1824641364êÖ4õæ÷http://rts.micex.ru/s690
÷ñÒ1824641364êÖ5õæ÷
				new DateTime(2013, 1, 1),
				new DateTime(2013, 1, 2),
				new DateTime(2013, 1, 3),
				new DateTime(2013, 1, 4),
				new DateTime(2013, 1, 7),
				new DateTime(2013, 3, 8),
				new DateTime(2013, 5, 1),
				new DateTime(2013, 5, 9),
				new DateTime(2013, 5, 10),
				new DateTime(2013, 6, 12)
			};