"Neil Weggery, our regular shearer, will be blade shearing. Neil has just recently shorn his one millionth sheep."
Shearers, shedhands and pressers from Alan Clarke Shearing will be in action throughout the day, with wool available for keen knitters and spinners.
And, of course, there will be the exotic sheep. Mr Hales' flock has expanded to include new and pure breeds as he is intent on maintaining their natural attributes, instincts and habits.
The flock now includes Gotland (Scandinavia), Pitt Island (Spanish), Karakul (Central Asia), Arapawa Island (Welsh), Dorper (South African), Damara (Egyptian) and Meatmaster, a new-concept breed focused on meeting the needs of the Asian market.
Recognising the importance of the day, which is put on at no charge by the Hales family, four Dannevirke companies - For Farms, Dannevirke Suzuki, Turtons Farm Supplies and Scanpower - have come on board as sponsors for the biggest day out on the farm in the lower North Island.
"I'm extremely grateful for the contribution made by these sponsors who will extend our facilities and add interesting displays," Mr Hales said. "And Shed 15 has been set aside for people to display their work and creations."