The |minutes filter (since SPIP 1.2, SPIP 1.2.1) displays the minutes portion of the date to which it is applied.
[(#DATE|minutes)]
The display returned varies from 00 to 59.
If the date to which the filter applies does not contain any time information, e.g. ([(#VAL{2009-10-24}|minutes)]), the filter will simply return (zero).
See also the heures_minutes, |heures and |secondes filters.