The Mayans figured a calendar that only went to 2012 would be good enough. And they were right, their civilization didn’t exist anymore in 2012. Only relevance their calendar system had in 2012 was that some people felt like it was a prophecy about the end of the world. Nope, just was an arbitrary date the Mayans rightly assumed would be far enough away it wouldn’t matter.

While I suppose you could make a date format that was infinitely expandable, it would take more processing power and is really unnecessary.

Anyway got until 2038 until we’ll have to deal with a popular date format running out of bits. We’ll probably be in some kind of mad max post apocalyptic world before then so it won’t matter.