here is a copy of ISO 8601-1:2019/Amd.1:2022(E) I found: https://cdn.standards.iteh.ai/samples/81801/f527872a9fe34281ae3a4af8e730f3f8/ISO-8601-1-2019-Amd-1-2022.pdf
I also got my hands on a set of ISO8601-1, -2, -1 AMD 2022. -2AMD 2025 Interestingly, ISO8601-1:2019 does not promote period or comma, It just says one should follow ISO80000-1. ``` 3.1.3.9 Note 1 to entry: The representations of the decimal signs (period or comma) and their usage rules are specified in ISO 80000-1. ``` Decimal sign spec is in ISO 80000-1 page 10, my preview only goes to 6
