The optimum time to observe the rising of Matariki is in the phase of the moon known as Tangaroa, the moon of plenty. The Tangaroa moon phase occurs in the three or four days leading to a new moon and will fall on different dates each year.
Here are the dates for the next 10 years:
||Setting Of Matariki||Rising Of Matariki||Matariki Period|
||19 May||17-20 July||17-22 July|
||7 June||6-9 July||6-13 July|
||27 May||25-28 June||25 June-3 July|
||15 May||13-16 July||13-20 July|
||2 June||2-5 July||2-10 July|
||23 May||21-24 June||21-29 June|
||13 May||10-13 July||11-17 July|
||31 May||29 June - 2 July||29 June-6 July|
||21 May||19-22 June||19-25 June|
||8 June||8-11 July||8-14 July|
||29 May||27-30 June||27 June-4 July|
Matariki dates sourced from: Matariki - The Star of the Year by Dr Rangi Matamua.