On-line Te Reo Māori Dictionary

Kei te kato pūhā au ā te Hātarei.
I am picking pūhā on Saturday.
Simple sentences: present tense with a verb - kei te

Ā te Hātarei rātou haere ai.
They will go on Saturday.

Ā te Hātarei haere ai au ki Ākarana.
It (will be) on Saturday (that) I shall go to Auckland.

I ngā Hātarei haere ai ia ki te hōtēra.
On Saturdays he habitually goes to the hotel.