I use the day of my diagnosis as my survivor birthday. I survived the diagnosis, the treatments and have recently celebrated 7 years of survivorship!

According to the American Cancer Society, you are considered a survivor from the date you were diagnosed. I had this same question so I called the 800 number and that is what they told be. So I am a survivor since June 11, 2012.

I'm going with my diagnosis date, though I expect I'll celebrate my surgery date, end of chemo date, end of radiation date - at lease the first year.

my doctors told me date of completion of treatment is your anniversary date.

I think its up to each of us! ;)