What happened in 1997 to make that cut anyway? There are several definitions with their own reasoning. For example the popular one I always use just makes every recent generation last 15 years and makes cuts that are easy to remember. It defines GenX to be born until 1980, Millennials until 1995 and GenZ until 2010. If you're born in one of those split years, you're basically part of two generations, though you're free to feel more attached to one generation over the other. Not that it matters too much anyway. In the end of the day it's just a time frame to quickly phrase what age group you're roughly talking about.