my internal system was built on the do not tell or suffer great harm (something my abusers would say to me during the trauma's) because of this all alters and body born person had the same birthday so as not to call attention to the fact that there were others, that the trauma happened, and not to call attention to the secrets we had to hide.

I can see why my system was like this....can you see it a 5 year old in a 10 year old body says at school its my birthday and everyone at school knows the body born birthday is not that day...teachers pulling child aside asking why are you saying today is your birthday when you know it is not whats going on are you ok, parents thinkig the child is lying questions that child and disciplines them for lying. siblings picking fights with the one saying its my birthday when its not the body born persons birthday...

yea something my system could not afford to happen. I had to not tell or get hurt so all my alters had the same birthday, that of the body born.