More specifically, it's intended to help you find the date of manufacture of one of their globes.

The dates and country names reflect when Replogle Globes changed their products, not politics on the ground. The map is not the territory!

It isn't quite consistent even there. I have a Replogle globe that according to the chart is simultaneously post-1975 (with Suriname) and pre-1971 (no United Arab Emirates, Zaire, or Bangladesh). So I suspect the Suriname entry is an error in the chart.

Suriname existed as a separate country before it became independent in November 1975.

It was part of the kingdom of the Netherlands, but not part of the country itself.

It was called Suriname, at least in the Netherlands, and, I am fairly sure, in Suriname itself.

It lists Bangladesh as formerly being a part of India. That is not just an error in a date - it is just factually wrong.