About 300 million people across the world will celebrate Persian New Year - or Nowruz - on Thursday. The 3,000-year-old festival begins on the first day of the year in the Iranian calendar, and is also a celebration of Spring. People in countries including Iran, Tajikistan, Turkey and Iraq will be welcoming the start of the year 1398, explains the BBC's Samar Salekipour. Please subscribe HERE http://bit.ly/1rbfUog