ISO
8601:2000(E)
©
ISO
2000
All
rights
reserved
iii
Contents
Page
Foreword.....................................................................................................................................................................iv
Introduction
.................................................................................................................................................................v
1
Scope
..............................................................................................................................................................1
2
Normative
references
....................................................................................................................................1
3
Terms
and
definitions
...................................................................................................................................2
4
Fundamental
principles
................................................................................................................................5
4.1
Basic
concepts...............................................................................................................................................5
4.2
Common
features,
uniqueness
and
combinations
....................................................................................5
4.3
Time-units
and
reference
systems...............................................................................................................6
4.3.1
Time-units.......................................................................................................................................................6
4.3.2
Date
and
time
reference
systems.................................................................................................................6
4.4
Characters
used
in
the
representations......................................................................................................8
4.5
Use
of
separators...........................................................................................................................................9
4.6
Truncation
......................................................................................................................................................9
4.7
Expansion.......................................................................................................................................................9
4.8
Leading
zeros.................................................................................................................................................9
4.9
Mutual
agreement
..........................................................................................................................................9
5
Representations...........................................................................................................................................10
5.1
Explanations.................................................................................................................................................10
5.1.1
Characters
used
in
place
of
digits
or
signs
..............................................................................................10
5.1.2
Characters
used
as
designators
................................................................................................................10
5.2
Dates
.............................................................................................................................................................11
5.2.1
Calendar
date
...............................................................................................................................................11
5.2.2
Ordinal
date
..................................................................................................................................................13
5.2.3
Week
date
.....................................................................................................................................................13
5.3
Time
of
the
day.............................................................................................................................................15
5.3.1
Local
time
of
the
day
...................................................................................................................................15
5.3.2
Midnight........................................................................................................................................................17
5.3.3
Coordinated
Universal
Time
(UTC)
............................................................................................................17
5.3.4
Local
time
and
Coordinated
Universal
Time.............................................................................................17
5.4
Combinations
of
date
and
time
of
the
day
................................................................................................18
5.4.1
Complete
representation
............................................................................................................................18
5.4.2
Representations
other
than
complete
.......................................................................................................19
5.5
Time-intervals...............................................................................................................................................20
5.5.1
Means
of
specifying
time-intervals............................................................................................................20
5.5.2
Separators
and
designators
.......................................................................................................................20
5.5.3
Representation
of
duration.........................................................................................................................20
5.5.4
Complete
representations
..........................................................................................................................21
5.5.5
Representations
other
than
complete
.......................................................................................................23
5.6
Recurring
time-intervals
.............................................................................................................................23
5.6.1
Means
of
specifying
recurring
time-intervals
...........................................................................................23
5.6.2
Separators
and
designators
.......................................................................................................................23
5.6.3
Complete
representations
..........................................................................................................................24
5.6.4
Representations
other
than
complete
.......................................................................................................24
Annex
A
(informative)
Relationship
to
ISO
2014,
2015,
2711,
3307
and
4031
.....................................................25
Annex
B
(informative)
Examples
.............................................................................................................................26
