The gnctimeperiod-utilities.scm file is based on the date-utilities.scm currently located on a windows machine in the folder C:\Program Files (x86)\gnucash\share\gnucash\scm and probably could be added to the date-utilites.scm file. Doug Doughty -- Sent from: http://gnucash.1415818.n4.nabble.com/GnuCash-Dev-f1435356.html