data : days type i.
CALL FUNCTION 'FIMA_DAYS_BETWEEN_TWO_DATES_2'
EXPORTING

   I_FLAG_INTRADAY = ' '
   I_DATUM_VON = '20080626'
*   I_ZEIT_VON =
   I_KZ_EXCL_VON = '0'
   I_KZ_ULT_VON = ''
   I_DATUM_BIS = '20080620'
*   I_ZEIT_BIS =
   I_KZ_INCL_BIS = '0'
   I_KZ_ULT_BIS = ''
   I_STGMETH = '5'
   I_SKALID = ' A' " Factory calander

IMPORTING
   E_TAGE = days.