How to Use Date Functions and Date Formatting in Excel

In this lesson, I respond to two recent requests from viewers for help in Using DATE Functions in Excel and also, how to apply Custom Date Formatting. I get similar requests on a frequent basis from both viewers and clients.

Solve Problem #1 

My first viewer wants help in using the DATE() Function in Excel. She wants to calculate a date that is 90 days after the starting date for a project. She encountered two problems

  1. Initially, the DATE() Function produced and error – because she forgot to ‘nest” the YEAR(), MONTH()+9, DAY() Functions inside the DATE() Function.
  2. She was not expecting a date to be filled in the formulas column when there was no starting date for the project – She needed to include an IF() function to perform a LOGICAL TEST – Does  the Starting Date = 0, Value if TURE, ” ” (to display nothing), Value if FALSE – to perform the calculation.
Excel Custom Date Formats

Excel Custom Date Formats

Solve Problem #2

My second viewer wanted my help to ensure that the date values that he “pasted” into a range of cells were in the (Custom) format of “yyyy-mm-dd” (Year, Month, Date).

In this case, we need to take two steps:

  1. Format the destination cells using the CUSTOM FORMAT of yyyy-mm-dd that we create.
  2. After “Pasting” the Copied Cells, use the “Paste Options” dialog box to select – “Match Destination Formatting.”

I also demonstrate how to use the NETWORKDAYS() Function and the WORKDAY() Function – with an optional list of “Holidays” to exclude. And, finally, I show you the “pitfalls” that occur when you import a “text” file of dates that use a variety of formats. In order to perform DATE calculations, a date must be stored as a NUMBER in Excel. It must be right-aligned in the cell.

You can watch this Excel Video Lesson in High Definition, Full Screen Mode on my YouTube Channel – DannyRocksExcel – by clicking this link.

Learn to “Master Excel in Minutes – Not Months!”

Learn How to Use Date Functions in Excel

Excel has a group of functions that help you to calculate dates. For example, the number of days between two dates or the date on which an invoice will be payable.

This is the second in my series of lessons where I demonstrate how to enter and calculate dates and times in Excel. Here is the link to part one.

Excel Tip List

Excel DVD Tips

The date functions that I demonstrate on this video are:

  • TODAY()
  • NOW()
  • DATE()
  • DATEVALUE()
  • WORKDAY()
  • NETWORKDAYS()
  • EOMONTH()

The last three date functions require you to activate the Analysis ToolPak Add-in. You will also learn some valuable and time saving keyboard shortcuts.

You can watch this video in High Definition, Full Screen Mode on my YouTube Channel – DannyRocksExcels

Learn how to “Master Excel in Minutes – Not Months!”

Calculate the Days Worked on a Project

Do you manage Projects? Do you create Project work schedules? Do you need to know how many days were actually worked on your Project?

If so, this Excel video lesson is for you. A viewer asked for my help. He did not want to use MS Project for his work schedules. Rather, he wants to know which Excel Functions to use for his Project work schedules.

Excel Functions Covered in this Tutorial

In this lesson, I demonstrate how to use two functions included in the Excel “Analysis Tool-Pak”:

  • =WORKDAY()
  • =NETWORKDAYS()

Index of Excel Video Tutorials

Search for a specific Excel Video Lesson on this website in my Index.

Watch Excel Tutorial on YouTube

Click on this link to watch this Excel Tutorial on my YouTube Channel – DannyRocksExcels

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Want to learn how to get the most out of Excel 2007?

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