The actual specification ISO 8601 costs like 300 bucks[0] to get a copy of, so hardly any developers implementing time libraries have ever read it. The reason

The actual specification ISO 8601 costs like 300 bucks[0] to get a copy of, so hardly any developers implementing time libraries have ever read it. The reason ISO 8601 handling is broken is because all these libraries are implementing against a wikipedia summary of a spec. It's a strong argument for free, open standards. [0] https://shop.bsigroup.com/ProductDetail/?pid=000000000030078726 https://shop.bsigroup.com/ProductDetail/?pid=000000000030078...