So, when's my birthday?

I was born at 1:50 AM, in Manhattan, just around 26 years ago now. So, here's my question: 1:50 am 3/20 on the east coast is 10:50 pm 3/19 on the west coast, where I am now. So, am I 26 already? Does my birthday change? If I was turning 21, would a bouncer care?