SAN FRANCISCO � Presidential Medal of Freedom? Got that. A place in the California Hall of Fame and Sean Penn playing you on-screen? Those, too. Now, Harvey Milk has a holiday of sorts to call his own. California will observe its first day of "special significance" Saturday honoring the slain gay rights leader on what would have been his 80th birthday. It took two legislative tries and the 2008 movie "Milk" to help persuade Gov.