The current date and time in the specified \fIformat\fR, which takes
the same format as the \fItemplate\fR argument to \fBstrftime\fR(3).
.
+.IP \fB%D\fR
+The current UTC date and time in ISO 8601 format (YYYY\-MM\-DD HH:MM:SS).
+.
+.IP \fB%D{\fIformat\fB}\fR
+The current UTC date and time in the specified \fIformat\fR, which takes
+the same format as the \fItemplate\fR argument to \fBstrftime\fR(3).
+.
.IP \fB%m\fR
The message being logged.
.
.RE
.
.IP
-The default pattern for console and file output is \fB%d{%b %d
-%H:%M:%S}|%05N|%c|%p|%m\fR; for syslog output, \fB%05N|%c|%p|%m\fR.
+The default pattern for console and file output is \fB%D{%Y-%m-%dT
+%H:%M:%SZ}|%05N|%c|%p|%m\fR; for syslog output, \fB%05N|%c|%p|%m\fR.
.
.IP "\fBvlog/reopen\fR"
Causes the daemon to close and reopen its log file. (This