ISO 8601-1:2019

Date and time — Representations for information interchange — Part 1: Basic rules

This document specifies representations of dates of the Gregorian calendar and times based on the 24-hour clock, as well as composite elements of them, as character strings for use in information interchange. It is also applicable for representing times and time shifts based on Coordinated Universal Time (UTC). 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.

Date et heure — Représentations pour l'échange d'information — Partie 1: Règles de base

General Information

• Status: Published
• Publication Date: 24-Feb-2019
• ICS: 01.140.30 - Documents in administration, commerce and industry
• Technical Committee: ISO/TC 154 - Processes, data elements and documents in commerce, industry and administration
• Drafting Committee: ISO/TC 154/WG 5 - Representation of dates and times
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Relations

• Consolidated By: ISO 15877-3:2009/Amd 2:2021 - Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl chloride) (PVC-C) — Part 3: Fittings — Amendment 2
• Effective Date: 06-Jun-2022
• Amended By: ISO 8601-1:2019/Amd 1:2022 - Date and time — Representations for information interchange — Part 1: Basic rules — Amendment 1: Technical corrections
• Effective Date: 14-Aug-2021
• Revises: ISO 8601:2004 - Data elements and interchange formats — Information interchange — Representation of dates and times
• Effective Date: 05-Mar-2016

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 8601-1
First edition
2019-02
Date and time — Representations for
information interchange —
Part 1:
Basic rules
Date et heure — Représentations pour l'échange d'information —
Partie 1: Règles de base
Reference number
ISO 8601-1:2019(E)
©
ISO 2019

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ISO 8601-1:2019(E)

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© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2019 – All rights reserved

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ISO 8601-1:2019(E)

Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Terms and definitions . 1
3.1.1 Basic concepts . 1
3.1.2 Time and date units . 5
3.1.3 Representations and formats . 8
3.2 Symbols .10
3.2.1 General.10
3.2.2 Time scale component symbols .10
3.2.3 Composite component symbols .11
3.2.4 Symbols used in place of digits or signs .11
3.2.5 Designator symbols .12
3.2.6 Separator symbols .13
4 Fundamental principles .13
4.1 Basic rules .13
4.2 Time scales .13
4.2.1 The Gregorian calendar .
...