Although we all have our favorite artists and other celebrities, there are some who are almost universally beloved because while they've never met most of us, it feels like they've always been a part of our lives.
It's for that reason that Mr. Rogers and Bob Ross are still roundly celebrated decades after they've passed away and it's why you'll find that the need to protect Betty White at all costs is such a common sentiment.
But in the United Kingdom, you'd be hard-pressed to find someone who has earned that status more than longtime nature documentarian Sir David Attenborough. But his fanclub extends far beyond that nation's borders.
And so, it should be no surprise that today is such a cause for celebration.