Do you really believe your birthdate repeats? Time is linear and it changes for everyone.  Its like the distance covered
 in the number of strides between a long and short legged being.  Its unique to the individual and dilation we share.  But it does not repeat.   So why tie yourself to an inaccurate clock which has entrapped and perverted your own natural cycle?  Your birthdate happened once and has never repeated, when you can grasp that then you will begin to understand the universe you exist in.