In Excel we tend to work in years, months or days. There may be times when you want to work in weeks.
Let’s say you have an input range that covers the whole year. You only want users to make entries in the current month column. How can you limit the month entry? The answer is a custom Data Validation.
Unfortunately Excel doesn’t have an ISDATE function. Excel’s macro language, VBA does, but there is no spreadsheet function that let’s you know if a cell contains a date. Well there is a partial workaround and you can also use VBA.
There are only two characters Excel recognises when separating numeric days, months and years in dates. They are the / and – characters.
Please don’t use the full stop as Excel won’t recognise it as a date.
Below you can see examples of using / and – in dates.
When you use the full stop Excel won’t recognise it as a date – see below.
Let’s say you want to allocate a value across multiple months based on a start date and how many months you want to allocate. The monthly allocation will be averaged based on the number of months. The solution isn’t that hard.
Let’s say you have a weekly roster. You have a date and you need to identify the Monday start date for the week that contains that date. The formula is fairly easy.
If you have the latest Excel version or the subscription version, you may have noticed some refreshing improvements to PivotTables.
Timeline charts are an effective way to display events over time. You can use a new Excel 2016 feature to easily create a timeline chart.
When plotting Actuals and Forecasts on a single line chart you may want to use a vertical dotted line to identify where the Actuals finish and the Forecasts begin.
Here’s another way to create a Step Chart. This one is quicker. I wrote previously about using a scatter plot and error bars but it required a lot of chart changes. This one hacks a line chart and requires no chart changes.
Grouping is a powerful feature in PivotTable reports but sometimes Excel won’t let you apply grouping. There are a few reasons for this.
Recently a client wanted help in summarising a large data list of employees. They wanted to identify the years of service in terms of 5, 10, 15 years and other milestone years based on a start date.
Getting dates into order is usually a job for Power Query, but not everyone has it or uses it so I still get requests for formulas to fix text dates.
There are a number of mouse and keyboard shortcuts for copying. But there is one type of copy that can be frustrating. Copying dates can be challenging because, in general, Excel wants to increment them, not copy them. There is a simple technique to instruct Excel to copy a date.
You can create complex functions with Excel to handle dates. But it makes more sense to get your data structured correctly and then you can use simpler date formulas. Power Query allows you to fix your data so that you can use those simpler formulas.
What is the best layout when working with months/quarters/half years and full years? There are a few common structures. I prefer the one that lets you create single formulas that can be quickly copied across and down with as few copies as possible.
We’ve all heard the term “A month of Sundays” to describe a long time. Well what if you wanted to count how many Sundays between two dates?
If you are using date-based headings in your reporting models please consider using dates in the headings rather than text. I’ll explain why.
The NETWORKDAYS.INTL function was added in Excel 2010. It allows to calculate how may work days between two dates using non-standard weekends. Some countries don’t have Saturday/Sunday weekends.
I had a question during one of my Date and Times Webinars in February. It was about months and fortnights. I couldn’t answer it during the webinar, but I did follow up with an email with the solution. The answer follows.