Matariki is the Māori name for the cluster of stars also known as the Pleiades. It rises in mid-winter and for many Māori, it heralds the start of a new year. Traditionally, it was a time for remembering the dead, and celebrating new life.
If your parish wishes to observe Matariki, which in 2019 is 25 June-3 July, check out these resources:
About Matariki (resources, activities and information collated by Te Papa Museum)