I believe that to be considered cured of cancer you have to be cancer-free for five years. My husband's niece had cancer and she has been cancer-free for five years. The five years started on the day of her last chemotherapy treatment.
AA members celebrate the anniversary of their sobriety date as a birthday. No reason why they and cancer survivors shouldn't commemorate a day they have reason to think important.
Well there's all kinds of different answers like how each person determines their own date but the answer that makes the most sense to me is , its the date of your final procedure .... like last radiation or the last chemo. Thats the date most people go by.
Are you asking about our own personal survivor b-day? If so, mine was November 21, 2013 when I was "cured in surgery" by way of a 2x mastectomy.
My surgeon tried to talk me out of the radical 2x, but I told her that I won't play "catch-me-if-you-can" with cancer. With the 2x, I bypassed radiation. (I've had radiation sickness before --bomb tests in the Nevada desert--and so I said noooooo thank you!) Also bypassed chemo.
I was very lucky.
I had enough staples in my chest to look like the grill of a 1948 Chrysler, but that's ok. Now, I just look a little more aero-dynamic.