Spreadsheet Diaryhttps://spreadsheet-diary.howlane.com/Real spreadsheet problems and how to solve them.enFri, 09 Oct 2026 12:00:00 GMTCleaning Up a Messy Sales Sheethttps://spreadsheet-diary.howlane.com/cleaning-up-a-messy-sales-sheet/https://spreadsheet-diary.howlane.com/cleaning-up-a-messy-sales-sheet/Fri, 09 Oct 2026 12:00:00 GMTA step-by-step method for finding and removing duplicate rows and extra spaces in a sales spreadsheet, based on official Excel documentation.Date Formulas for Deadlines and Workdayshttps://spreadsheet-diary.howlane.com/date-formulas-for-deadlines-and-workdays/https://spreadsheet-diary.howlane.com/date-formulas-for-deadlines-and-workdays/Fri, 09 Oct 2026 12:00:00 GMTHow DATEDIF, NETWORKDAYS, and EDATE work in Excel, with each official example re-checked against a plain Python date calculation.VLOOKUP vs XLOOKUP, Which Should You Use?https://spreadsheet-diary.howlane.com/vlookup-vs-xlookup-which-to-use/https://spreadsheet-diary.howlane.com/vlookup-vs-xlookup-which-to-use/Fri, 09 Oct 2026 12:00:00 GMTA side-by-side comparison of VLOOKUP and XLOOKUP in Excel, with a worked table example, based on official Microsoft function documentation.Your First Pivot Table, Explainedhttps://spreadsheet-diary.howlane.com/your-first-pivot-table-explained/https://spreadsheet-diary.howlane.com/your-first-pivot-table-explained/Fri, 09 Oct 2026 12:00:00 GMTA beginner walkthrough of what a pivot table does and how to build one in Excel or Google Sheets, based on official Microsoft and Google documentation.