Matarik 2013, The Maori New Year

All Maori are excited and thrilled about Matariki which is observed in the month of June. This year Matariki is on the 21 June. I like to read about how you celebrate Matariki! What is Matariki? What does Matariki mean? How do they know when is the Maori New Year? Why is Matariki important? How is Matariki celebrated in Aotearoa?