https://www.loc.gov/standards/datetime/iso-tc154-wg5_n0039_iso_wd_8601-2_2016-02-16.pdf
https://www.ionos.com/digitalguide/websites/web-development/iso-8601/
oracle數據庫的支持：https://docs.oracle.com/en/database/oracle/oracle-database/21/adjsn/iso-8601-date-time-and-duration-support.html#GUID-20DC09A8-98DF-4473-8077-913D490A969C