Outside the World Cup, the last time such a crowd figure was reached was for the tied New Zealand-India one-day international in 2014.
The current tri-series looks set to generate similar interest.
"Having good weather, Australia as an opponent, and a win against England [on Tuesday in Wellington] all helps," said James Wear, New Zealand Cricket's General Manager Commercial.
"A Friday night T20 works well and we've already seen spikes in sales on Tuesday [during the England match] and today.
"It'll be a big crowd and a great atmosphere but I can't stress enough that people should get there early rather than risk getting frustrated."
The news will be a fillip for NZC who have endured relatively poor attendances at Westpac Stadium matches this summer. The swath of empty yellow seats left nothing to the imagination.
Eden Park Trust chief executive Nick Sautner encouraged fans to pre-purchase their tickets.
"Gates are open from 5:30pm and fans arriving at the stadium early will be able to take full advantage of our new food and beverage options.
"Don't forget, free travel on trains is included with your ticket. With the forecast looking perfect we are excited to host another memorable live experience at New Zealand's national stadium."