ISO 8601-2:2019 日期和时间 信息交换的表示 第2部分：扩展

标准编号：ISO 8601-2:2019

中文名称：日期和时间 信息交换的表示 第2部分：扩展

英文名称：Date and time — Representations for information interchange — Part 2: Extensions

发布日期：2019-02

标准范围

This document specifies additional representations of dates of the Gregorian calendar and times based 
on the 24-hour clock that extend the basic rules and composite elements of those defined in ISO 8601-1. 
These representations are specified as character strings for use in information interchange. It is also 
applicable for representing times and time shifts based on Coordinated Universal Time (UTC).
These extensions include:
— uncertain or approximate dates, or dates with portions unspecified;
— extended time intervals;
— divisions of a year;
— sets and choices of calendar dates;
— grouped time scale units;
— repeat rules for recurring time intervals; and
— date and time arithmetic.
This document excludes the representation of date elements from non-Gregorian calendars, or times 
not from the 24-hour clock. This document does not address character encoding of representations 
specified in this document.

标准预览图