Natalie Richardson was passing through with her mum yesterday when they noticed the phenomena in the sky, saying it was slowing changing colour for about 15 minutes.
Ms Ardern's meeting with the PNG Prime Minister was pushed back, but she was able to attend meetings with a number of Pacific nations' leaders, where climate change and plastic pollution were high on the agenda.
Fifty people have died in the past year in New Zealand after using synthetic cannabis and the Government is still scrambling for a solution.
Witnesses say there was a stunned silence as the Hawera Mt View Lions Club float made its way down the street.
"Don't hesitate, you don't have time. If your child is complaining of a headache and a stiff neck take them to the doctor or hospital as soon as possible."
In addition to the summit, Jacinda Ardern will be visiting a produce market, which New Zealand aid money helped to renovate.
The discovery was made after New Zealand Customs and police inspected the container and found five duffel bags on top of the banana boxes.