Rio 2016 Olympics - Lauren Boyle takes centre stage for New Zealand overnight as the country's great medal hope in the pool.
It's another busy day for New Zealanders, as the women's Sevens and hockey teams are also in action.
At midnight, Natalie Rooney will try to get through trap shooting qualification.
At 1am, the equestrian eventing team takes part in the second day of dressage, while featuring in the individual events are Jonelle Price and Clarke Johnstone.
At the same time, the women's hockey team debuts against Korea.
Soon after, the women's pair of Rebecca Scown and Genevieve Behrent feature at Lagoa.
It's the lightweight double scull team of Julia Edward and Sophie MacKenzie's turn at 1.40am.
At 3.15am, Linda Villumsen takes part in the women's cycling road race, while at 4.28am, Mike Dawson is scheduled to compete in the heats for the slalom kayak canoe event.
It is another busy night in the pool, with Matthew Stanley and Corey Main swimming in the 200m freestyle and 100m backstroke between 4.15am and 5.30am respectively.
But Lauren Boyle will be the star attraction at 5.39am in the heats for the 400m freestyle.
Boyle will become the fourth Kiwi swimmer to take part in three Olympic Games.
The men's hockey team will try to bounce back from defeat to Australia against Great Britain at 8am.
Gymnast Courtney McGregor will compete between 8.30am and 10am in a range of disciplines.
The tennis double's pair of Marcus Daniell and Michael Venus will play a tough first round match against Canadians Vasek Pospisil and Daniel Nestorat 9.45am.