ISO
8601:2000(E)
14
©
ISO
2000
All
rights
reserved
5.2.3.1
Complete
representation
When
the
application
identifies
the
need
for
a
complete
representation
of
a
date
identified
by
calendar
week
and
day
numbers,
it
shall
be
one
of
the
alphanumeric
expressions
as
follows,
where
[YYYY]
represents
a
calendar
year,
[W]
is
the
week
designator,
[ww]
represents
the
ordinal
number
of
a
calendar
week
within
the
year,
and
[D]
represents
the
ordinal
number
of
a
day
within
the
calendar
week.
Basic
format:
YYYYWwwD
EXAMPLE
1985W155
Extended
format:
YYYY-Www-D
EXAMPLE
1985-W15-5
5.2.3.2
Representation
with
reduced
precision
If
the
degree
of
precision
required
permits,
one
digit
may
be
omitted
from
the
representation
in
5.2.3.1.
a)
A
specific
week
Basic
format:
YYYYWww
EXAMPLE
1985W15
Extended
format:
YYYY-Www
EXAMPLE
l985-W15
5.2.3.3
Truncated
representations
If,
by
agreement,
truncated
representations
are
used
the
basic
formats
shall
be
as
specified
below.
In
each
case
hyphens
that
indicate
omitted
components,
shall
be
used
only
as
indicated
or
shall
be
omitted
a)
Year,
week
and
day
in
the
implied
century
Basic
format:
YYWwwD
EXAMPLE
85W155
Extended
format:
YY-Www-D
EXAMPLE
85-W15-5
b)
Year
and
week
only
in
the
implied
century
Basic
format:
YYWww
EXAMPLE
85W15
Extended
format:
YY-Www
EXAMPLE
85-W15
c)
Year
of
the
implied
decade,
week
and
day
only
Basic
format:
-YWwwD
EXAMPLE
-5W155
Extended
format:
-Y-Www-D
EXAMPLE
-5-W15-5
d)
Year
of
the
implied
decade
and
week
only
Basic
format:
-YWww
EXAMPLE
-5W15
Extended
format:
-Y-Www
EXAMPLE
-5-W15
e)
Week
and
day
only
of
the
implied
year
Basic
format:
-WwwD
EXAMPLE
-W155
Extended
format:
-Www-D
EXAMPLE
-W15-5
f)
Week
only
of
the
implied
year
Basic
format:
-Www
EXAMPLE
-W15
Extended
format:
not
applicable
g)
Day
only
of
the
implied
week
Basic
format:
-W-D
EXAMPLE
-W-5
Extended
format:
not
applicable
NOTE
1
5.2.3.3
includes
the
definition
of
representations
which
are
both
truncated
and
have
reduced
precision.
NOTE
2
Logically
the
representations
should
be
[--W-D],
but
the
first
hyphen
is
superfluous
and,
therefore,
it
has
been
omitted.
