Couples are queuing to tie the knot on November 11, 2011 - with some even booking 11am weddings.
Celebrants, photographers, car hire companies and venues have all reported unusually high interest in ceremonies on that Friday.
Auckland celebrant Sara Maclennan said Friday weddings were increasingly popular and the level of enquiry for 11/11/11 had been high.
"People want to get married at 11am also. I have one of those booked."
She believed the idea was romantic and an easy date for grooms to remember.
"Brides have said 'he's got no excuse to forget our anniversary'."
Numerologist Sandra Singleton said the date symbolised romance, commitment and luck.
"If you add one and one that equals two which means harmony, interacting and overlapping. Then 2011 added together equals four.
"Add all of those together and you get eight, so that day is very strong for commitment. It's also influential because it's the Chinese lucky number."
Figures from Statistics New Zealand reveal marrying on patterned dates has proved popular in the past.
Statistical analyst Richard Speirs said 148 couples married on 09/09/09, a Wednesday. And he said 309 couples got married on 08/08/08, a Friday, the highest number of marriages on one day in the last decade.
Department of Internal Affairs spokesman Shawn Hollister said it was too early to say how many people had registered to marry on November 11.
But Marissa Larson will be among them and said the number 11 was special to her and fiance Keith Rawlinson.
They met on October 11, had their first child 11 days prematurely at 1.11am on June 11 and their second at 11.31am.
"Hopefully by the time we start saying our vowels it will be 11 minutes past 11," Marissa said.
They met a decade ago while "doing laps" around Hamilton in their boyracer cars.
Marissa said they chose November 11 because that date would never happen again and their combined age and birth years equalled 111.
"I was born in 83 and turning 28, which makes 111," said Marissa.
Told the date symbolised commitment and luck Marissa said: "We have been going strong for 10 years now so it makes sense we will keep going strong."
Numbers stack up to marry
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