I believe this is how Google handles leap years and leap seconds on all of their servers. They kind of smear the difference out over a period of time so the difference isn’t noticeable. Great for day to day activities, but people doing scientific measurements or other precision date work would probably have to use their own solution.
I don’t understand why image generators can’t just make a quick call to a chatGPT API? It’s incredibly competent at producing convincing text.