In the attached XLSX workbook, I have the first quarter from this year (Jan - Mar 2014) for our conference rooms so we can keep track of reservations. I want to update it so that the first day of 2015 will say Thursday January 1 2015 instead of reflecting the 2014 date. I want to do this for each day in the workbook to reflect the 2015 date. I have 4 workbooks all formatted like this, and will need to change the dates for all 4 workbooks representing each quarter of next year. The formatting is consistent across workbooks and worksheets.