The days of observance of Matariki for the first 30 years have already been set so that we can solidify there is a public holiday that will fall on a Friday in the phase of Tangaroa, according to the moon-phase experts. The Tangaroa phase in the month of June which signals the correct time. Therefore, this series has been decided upon by the Matariki Advisory Group, rightly so, as it is ancient knowledge, it is Māori knowledge that has been shared with us.