The omitting of timezones doesn’t matter to a vast majority of the world, since most countries only have one time zone so I don’t see a reason why that is relevant in most use cases.
ISO is a general standard, it’s in the name and the RFC is created for the internet, that is also in the name/description of the RF.
Using 2025-164 can be handy, I actually use the day of the year to check what invoices from previous year are open since those are the invoices that are due 164 days or more.
The omitting of timezones doesn’t matter to a vast majority of the world, since most countries only have one time zone so I don’t see a reason why that is relevant in most use cases.
ISO is a general standard, it’s in the name and the RFC is created for the internet, that is also in the name/description of the RF.
Using 2025-164 can be handy, I actually use the day of the year to check what invoices from previous year are open since those are the invoices that are due 164 days or more.