[1] [CITE@en[Date and time -- Concepts and vocabulary — ISO/TC 154: Processes, data elements and documents in commerce, industry and administration]], [TIME[2020-11-05T08:12:29.000Z]], [TIME[2022-07-05T05:09:34.307Z]] <https://www.isotc154.org/projects/iso-34000/>


>ISO/WD 34000 project
>Date and time -- Concepts and vocabulary

[3] [CITE[Calndr-L - Future ISO standards]], [TIME[2022-07-05T05:11:56.000Z]], [TIME[2020-08-28T04:32:48.013Z]] <https://web.archive.org/web/20200828043205/http://calndr-l.10958.n7.nabble.com/Future-ISO-standards-td19077.html>

>
- ISO 34000 Date and time — Concepts and vocabulary
- ISO 34002 Date and time — Timezones
- ISO 34003 Date and time — Codes for calendar systems

[2] [CITE@en[Date and time -- Codes for calendar systems — ISO/TC 154: Processes, data elements and documents in commerce, industry and administration]], [TIME[2020-11-05T08:12:29.000Z]], [TIME[2022-07-05T05:10:05.349Z]] <https://www.isotc154.org/projects/iso-34300/>


>ISO/NP 34300 project
>Date and time -- Codes for calendar systems