Re: [elixir-core:10042] ISO 8601 ordinal dates

I think the gotcha here is that there are various "profiles" of ISO-8601, and the one we typically think of as ISO-8601 in practice is the W3C profile used on the web (see https://www.w3.org/TR/NOTE-datetime for a description of what that profile includes). The other common profile is RFC-3339 w

[elixir-core:10042] ISO 8601 ordinal dates

As observed by @ryanbigg on Twitter , *"2021-034"* is a valid ISO 8601 date. Specifically, it is an ordinal date descriptor of the format -DDD. Unlike some o