AS ISO 8601-2003

1 - AS ISO 8601-2003 DATA ELEMENTS AND INTERCHANGE FORMATS-INFORMATION INTERCHANGE-REPRESENTATION OF DATES AND TIMES
4 - PREFACE
5 - CONTENTS
7 - 1 Scope
7 - 2 Normative references
8 - 3 Terms and definitions
8 - 3.1 Coordinated Universal Time (UTC)
8 - 3.2 date
8 - 3.3 date, calendar
8 - 3.4 date, ordinal
8 - 3.5 date, week
8 - 3.6 day
8 - 3.7 day, calendar
9 - 3.8 duration
9 - 3.9 format, basic
9 - 3.10 format, extended
9 - 3.11 Gregorian calendar
9 - 3.12 hour
9 - 3.13 local time
9 - 3.14 minute
9 - 3.15 month
9 - 3.16 month, calendar
9 - 3.17 period of time (time-interval)
10 - 3.18 recurring time-interval
10 - 3.19 representation, complete
10 - 3.20 representation, decimal
10 - 3.21 representation, expanded
10 - 3.22 representation, truncated
10 - 3.23 representation with reduced precision
10 - 3.24 second
10 - 3.25 second, leap
10 - 3.26 time-point
10 - 3.27 week
10 - 3.28 week, calendar
11 - 3.29 year
11 - 3.30 year, calendar
11 - 3.31 year, centennial
11 - 3.32 year, common
11 - 3.33 year, leap
11 - 4 Fundamental principles
11 - 4.1 Basic concepts
11 - 4.2 Common features, uniqueness and combinations
12 - 4.3 Time-units and reference systems
12 - 4.3.1 Time-units
12 - 4.3.2 Date and time reference systems
14 - 4.4 Characters used in the representations
15 - 4.5 Use of separators
15 - 4.6 Truncation
15 - 4.7 Expansion
15 - 4.8 Leading zeros
15 - 4.9 Mutual agreement
16 - 5 Representations
16 - 5.1 Explanations
16 - 5.1.1 Characters used in place of digits or signs
16 - 5.1.2 Characters used as designators
17 - 5.2 Dates
17 - 5.2.1 Calendar date
19 - 5.2.2 Ordinal date
19 - 5.2.3 Week date
21 - 5.3 Time of the day
21 - 5.3.1 Local time of the day
23 - 5.3.2 Midnight
23 - 5.3.3 Coordinated Universal Time (UTC)
23 - 5.3.4 Local time and Coordinated Universal Time
24 - 5.4 Combinations of date and time of the day
24 - 5.4.1 Complete representation
25 - 5.4.2 Representations other than complete
26 - 5.5 Time-intervals
26 - 5.5.1 Means of specifying time-intervals
26 - 5.5.2 Separators and designators
26 - 5.5.3 Representation of duration
27 - 5.5.4 Complete representations
29 - 5.5.5 Representations other than complete
29 - 5.6 Recurring time-intervals
29 - 5.6.1 Means of specifying recurring time-intervals
29 - 5.6.2 Separators and designators
30 - 5.6.3 Complete representations
30 - 5.6.4 Representations other than complete
31 - Annex A - Relationship to ISO 2014, 2015, 2711, 3307 and 4031
32 - Annex B - Examples
32 - B.1 Dates
33 - B.2 Time of the day
34 - B.3 Combinations of date and time of the day
34 - B.4 Time-intervals
35 - B.5 Recurring time-intervals

Provides specifications for a numeric representation of information regarding date and time of day.

This International Standard specifies the representation of dates in the Gregorian calendar and times and representations of periods of time. It includesa) calendar dates expressed in terms of year, month and day of the month;b) ordinal dates expressed in terms of year and day of the year;c) week dates expressed in terms of year, week number and day of the week;d) time of the day based upon the 24-hour timekeeping system;e) differences between local time and Coordinated Universal Time (UTC);f) combination of date and time;g) time-intervals;h) recurring time-intervals.This International Standard is applicable whenever dates and times are included in information interchange.This International Standard does not cover dates and times where words are used in the representation and dates and times where characters are not used in the representation.This International Standard considers the leap seconds that are occasionally inserted at the end of a calendar month to maintain astronomic precision of the calendar day.This International Standard does not assign any particular meaning or interpretation to any data element that uses representations in accordance with this International Standard. Such meaning will be determined by the context of the application.

First published as AS ISO 8601-2003.