@c GNU date syntax documentation
-@c Copyright (C) 1994-2006, 2009-2011 Free Software Foundation, Inc.
+@c Copyright (C) 1994-2006, 2009-2012 Free Software Foundation, Inc.
@c Permission is granted to copy, distribute and/or modify this document
@c under the terms of the GNU Free Documentation License, Version 1.3 or
* Calendar date items:: 19 Dec 1994.
* Time of day items:: 9:20pm.
* Time zone items:: @sc{est}, @sc{pdt}, @sc{gmt}.
+* Combined date and time of day items:: 1972-09-24T20:02:00,000000-0500
* Day of week items:: Monday and others.
* Relative items in date strings:: next tuesday, 2 years ago.
* Pure numbers in date strings:: 19931219, 1440.
@item calendar date items
@item time of day items
@item time zone items
+@item combined date and time of day items
@item day of the week items
@item relative items
@item pure numbers.
(@pxref{Specifying time zone rules}).
+@node Combined date and time of day items
+@section Combined date and time of day items
+
+@cindex combined date and time of day item
+
+A @dfn{combined date and time of day item} specifies the time on a
+specific day of the year. This type is needed for formats that cannot
+be represented by individual calendar date (@pxref{Calendar date items})
+and time of day (@pxref{Time of day items}) items due to ambiguity.
+
+@example
+# ISO 8601 extended date and time of day format
+1972-09-24T20:02:00,000000-0500
+@end example
+
+@cindex @sc{iso} 8601 date and time of day format
+@cindex date and time of day format, @sc{iso} 8601
+
+The @sc{iso} 8601 extended date and time of day format is an @sc{iso}
+8601 date, a @samp{T} character separator, followed by an @sc{iso} 8601 time
+of day.
+
+
@node Day of week items
@section Day of week items