I'm probably missing an 'in joke' here, but I thought it was weird the Panthers celebrating last year.... If you were born on 2/4/67, when would you celebrate your 50th Birthday? If you got married on 2/4/67, when would you celebrate your 50th anniversary?
You celebrate the completion of a year, because then you've been around for a full year. So, whilst yes, we've just entered our 51st season (or 51st year if you were born on that date, or 51st year of marriage), we're celebrating the 50th anniversary of our club.
And we celebrated the completion of our 50th season in fine style!