They can happen at any age but the context and mix are likely to change
not so much through age but accumulated experience.

Leni Riefenstahl falsified her date of birth to qualify for a scuba diving certificate because (IIRC)
she exceeded the age limit otherwise. I think she was 75. She went on making films until she was 100.

For me, waking up to being gnostic was one thing but Vodou gnostic took some inner adventure.
I'm glad it was earlier so that now I can accumulate experience on top of it.

We do our own things. As an adept once told me, every moment of every day is of occult importance.
It's up to us what we assimilate.