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  • Programmability Improvements in Excel 2010

    Thanks to Danny Khen for putting together this post. What’s new? Excel has been a platform for developing business solutions for a long time now. Developers write code to customize and extend Excel in many ways – automating Excel operations, user interface customizations, data entry forms and extending Excel formulas with user defined functions, to name some key ones. Many developers create very complex applications, which have demanding requirements and push Excel to its limits, so developers are...

  • Calculate the ISO Start of Year date

    Today’s author is Shane Devenshire, who has been an Excel MVP for many years and who regularly contributes to Excel Newsgroups. He has published over 300 articles in different computer magazines, and co-authored numerous books. Excel might be better today because of the many bugs he posted when he was a Beta tester! This post shows you how to use a formula or custom VBA function to calculate the ISO Start of Year date. Here is a formula for calculating the ISO Start of Year date for any legal Excel...

  • Week Numbers in Excel

    Today’s author is, Ron de Bruin, an Excel MVP . You can find more useful tips from Ron and links to Excel add-ins at his website: http://www.rondebruin.nl/ There are four primary week numbering systems in use worldwide. Each system has subtle differences that you should be aware of. Excel can work with any of these systems: 1)  ISO Week number: The International Organization for Standardization (ISO) ISO8601:2000 Standard. All weeks begin on a Monday. Week one starts on Monday of the first week...
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