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diff --git a/manual/time.texi b/manual/time.texi
index 03a8a0e10f..6d398bfe1f 100644
--- a/manual/time.texi
+++ b/manual/time.texi
@@ -1393,6 +1393,10 @@ The preferred calendar time representation for the current locale.
The century of the year. This is equivalent to the greatest integer not
greater than the year divided by 100.
+If the @code{E} modifier is specified (@code{%EC}), instead produces
+the name of the period for the year (e.g.@: an era name) in the
+locale's alternative calendar.
+
This format was first standardized by POSIX.2-1992 and by @w{ISO C99}.
@item %d
@@ -1579,6 +1583,13 @@ can be overridden by an explicit field width or by the @code{_} and
The year as a decimal number, using the Gregorian calendar. Years
before the year @code{1} are numbered @code{0}, @code{-1}, and so on.
+If the @code{E} modifier is specified (@code{%EY}), instead produces a
+complete representation of the year according to the locale's
+alternative calendar. Generally this will be some combination of the
+information produced by @code{%EC} and @code{Ey}. As a GNU extension,
+the formatting flags @code{_} or @code{-} may be used with this
+conversion specifier; they affect how the year number is printed.
+
@item %z
@w{RFC 822}/@w{ISO 8601:1988} style numeric time zone (e.g.,
@code{-0600} or @code{+0100}), or nothing if no time zone is