Your legal birth date would be 1st March. You would still be 17 on 28th February-just as you would if it was a leap year. Therefore when 29th is skipped, your legal birthday falls on the next day after your last day of being 17. Also yes you can enter a bar at midnight, because once the clock turns to 12am, the day has changed. :). Aidan H · 4 years ago.