nannaversary 

A day that celebrates the birth of each of your Grandchildren and the day that you became their Grandparent. Celebrated each year in on the same day as their birthdays.

Nana, it's my Birthday, today. Yes, and it's my Nannaversary too, I became an Nana the day you were born, and I Love you very much.

nannaversary by margjoy August 1, 2015

Nonaversary 

The day you were married to an ex spouse. Your non anniversary.

I celebrated my Nonaversary by throwing darts at a photo of my ex.

Nonaversary by Faster Redhead May 5, 2016

nonaversary 

The date that you got married to your ex-spouse

I'm celebrating y first nonaversary by getting a boobjob and going to South Beach with my squad.

nonaversary by Faster Redhead May 24, 2016

nonniversary 

What you call your wedding anniversary after you are divorced or separated.

Tomorrow I will be celebrating my 2nd nonniversary.

nonniversary by drguy June 1, 2013

nonniversary 

The day that would have been the anniversary of a relationship that failed.

Michelle: I would have been married to Oscar 12 years today... if he hadn't been a total cheating, lying douchebag that I divorced.
Amber: Happy nonniversary.

nonniversary by derby mined August 17, 2011

nanoversary 

Half way to your first anniversary, also known as a 6 month anniversary.

Last night I took Penny out to dinner to celebrate our nanoversary.

nanoversary by Pete Magrath December 21, 2007