The |secondes filter displays the seconds portion of the date to which it is applied.
[(#DATE|secondes)]
The displayed results varies from 00 to 59.
If the date to which the filter is applied does not contain any time information, e.g. ([(#VAL{2009-10-24}|secondes)]), the filter will simply return (zero).
See also
Filters
And also
And article on Managing Dates