How to create interactive calendar to highlight events & appointments [Tutorial]

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One of the popular uses of Excel is to maintain a list of events, appointments or other calendar related stuff. While Excel shines easily when you want to log this data, it has no quick way to visualize this information. But we can use little creativity, conditional formatting, few formulas & 3 lines of VBA code to create a slick, interactive calendar in Excel. Today, lets understand how to do this.

But first, a reminder to join my Advanced Excel masterclass in USA

As you may know, I am running my first ever Advanced Excel & Dashboards Masterclass in USA this summer (May / June 2013). We will be doing 2 day interactive sessions on Excel, advanced Excel, interactive charts, pivot tables & dashboards in Chicago, New York, Washington (DC) & Columbus (OH). If you live near any of these cities and want to become awesome in Excel, please consider enrolling in my Masterclass.

Click here for details & to book your spot | Download Masterclass brochure

Back to the interactive calendar

Coming back to our topic at hand – interactive calendar, what do we mean by this?

Well, something like below:

Interactive Event Calendar in Excel - Demo

How to create an interactive calendar from a set of events

1. Collect all the event data in a table

Just enter event data in a table like below:

Interactive calendar - event data

2. Set up a calendar in a separate rate

If your events span several months, then you can use formulas to generate calendar.

In my case, all the events (Masterclass sessions) are in May & June 2013. So I just entered date of May 1st in a cell, dragged it sideways and then re-arranged the cells to make it look like a calendar. At this stage, the calendar should look like this:

set up a blank calendar first - Interactive calendar

3. Name the calendar range

This is simple. Select all the cells in calendar range and give a name to it. I called mine “calendar”.

4. Assign a cell for identifying which date is selected

Select a blank cell in your workbook, give it a name like “selectedCell”. We will use this to identify which date is selected by user.

5. Write Worksheet_selectionchange() event

This will help us identify when user selects a cell in “calendar” range. The below 3 line VBA should do. Please attach it to the sheet where your calendar is.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
    If Not Application.Intersect(Target, Range("calendar")) Is Nothing Then
       [selectedCell] = ActiveCell.Value
    End If
End Sub

Tutorial: Showing details when user selects a cell

6. Set up the formulas to show details when a valid date is selected

Lets say, each event has 4 details associated with it – title, date, venue & description.

Now, we need to show details of the event when user selects a date in the calendar. Since the selected date is in “selectedCell”, we can use VLOOKUP, IF, IFERROR formulas to do this:

  • Fetch event title in a cell if date selected has an event in it. Else keep it blank
    • =IFERROR(VLOOKUP(selectedCell, table_of_events, event_title_column, false),"")
  • Fetch rest of event details, but keep them blank if date has no events.

Lets say these 4 details are fetched to cells D1, D2, D3 & D4 cells.

7. In calendar sheet, add 4 text boxes and assign them to cells

Finally, in calendar sheet, add 4 text boxes. Assign them to D1, D2, D3 & D4 cells. Arrange and format them as you fancy.

Tip: to assign a cell to text box, just select the text box, go to formula bar and type =D1 press enter.

8. Set up conditional formatting to highlight selected dates

Finally, add a simple conditional formatting rule to highlight the selected dates in calendar. This is simple. Assuming calendar starts at cell A1,

  • Select the calendar range
  • Go to conditional formatting
  • Add new rule
  • Select rule type as “Use a formula to determine which cells to highlight”
  • type the rule as =A1=selectedCell
  • Set up formatting

PS: in my data above, I have used different formula as we need to highlight 2 dates of a Masterclass even when 1 is selected.

Tip: Introduction to conditional formatting.

9. Clean up and formatting

Clean up your worksheets and format the calendar so that it looks gorgeous. And you are done!

Finalized Interactive calendar

 

Download Interactive Calendar Example file

Click here to download interactive calendar example file and play with it to understand this better.

Examine the formulas in “Calcs” sheet & VBA code so that you can see how this is weaved.

Work with calendar data often, then you are in luck

If you use calendar data often and are looking for some inspiration, ideas & examples on how to represent it, then check out below examples:

Do you like the interactive calendar?

I often use interactive calendars in my dashboards & client projects. Since calendars are very natural way to understand events, they work really well.

What about you? Do you use calendars often? How do you like the above technique? Please share your thoughts & ideas using comments.

PS: And if you are waiting to become awesome in Excel, then wait no more. Book your spot in my upcoming Masterclass. Click here.

 

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22 Responses to “Formula Forensic No 019. Converting uneven Text Strings to Time”

  1. Joe Carsto says:

    Why not let the TIME function take care of the math:
    =TIME(LEFT(TEXT(A1,"000000"),2),MID(TEXT(A1,"000000"),3,2),RIGHT(TEXT(A1,"000000"),2))

    • Ben Niebuhr says:

      I was going to point out the same thing, except to note that useing the time function and doing the divide method are not interchangeable.

      I have spent hours investigating a spreadsheet working with a couple of years worth of hourly data, and found that the reason things weren't working is because the rounding on the divide method is only close to the correct time values. In order to have it work for comparisons, (like sub-totaling by time value, or pivoting) you MUST use the TIME function.

      Great use of the TEXT function, Hui. I will be using this concept for sure.

  2. Elias says:

    Why not just.

    =TEXT(A1,"00\:00\:00")*1

    Regards

    • Joe Carsto says:

      Elegant!

    • Manick says:

      Hi Elias,

      I tried to use your formula. But, it doesn't seem to work for me. I am getting an error message "The formula you typed contains an error". It seems I have the problem in using \: in the format. How can I overcome this?

      Thanks

      • Greg G says:

        Manick, it isn't the /: that causes the problem. If you copy/paste it, you're getting “'s instead of the actual quotation marks that Excel uses. Change the quotation marks by deleting from the pasted formula and retype them.

      • modeste says:

        Hi Manick...
        use this alternate formula :
        =1*TEXT(A1,"00"":""00"":""00")

        note twice double quote each side of :

  3. Elias says:

    @Manick,

    Did you copy the formula and pasted in Excel or did you typed? Also, do you use , or ; as separator of arguments?

    Regards

    • Joe Carsto says:

      @Elias: I had no problem using your formula, in fact, I have used your method to convert a number such as 20120419 to an Excel date using =TEXT(A1,"0000\/00\/00")*1. Thanks for posting.

      • Elias says:

        @Joe: For date convertion you can use this as well.

        =TEXT(A1,"00-00-00")*1

        Regards

        • Joe Carsto says:

          Sweet! It appears this also works with =TEXT(A1,"0-00-00")*1. I come from the old days when you counted every byte. I also like to try an make formulas as small as possible for the fun of it 🙂

  4. Haseen says:

    Elias's suggestion is the simplest, but here is yet another way with TIME and MOD functions...

    =TIME(MOD(A2/10000,100),MOD(A2/100,100),MOD(A2,100))

  5. Since the seconds appear to always be 0, why not simply the input to minutes and above and save yourself the trouble of typing those zeroes...

    0 => 0:00
    1 => 1:00
    10 => 10:00
    100 => 1:00:00
    etc.

    Then just use this formula...

    =TEXT(A1,"0\:00\:")*1

    • Elias says:

      @ Rick, the numbers to convert are no typed, they are imported. Then your formula will return the wrong result.

      Regards.

  6. Hmm! My formula lost some backslash-zero combinations (two of them to be exact). The formula was supposed to be this...

    =TEXT(A1,"0\:00\:\zero\zero")*1

    where the words "zero" should actually be the number 0. Another way to write the formula is this...

    =TEXT(A1,"0\:00\:""00""")*1

  7. Rajagopal says:

    Hi Master,
    While writing the formulae you have considered only upto "seconds factor" . I think you should take the centi-seconds factor also to achieve best results. Please look into it and rectify the problem...?

    For Example.
    In horse racing timings are noted in minute, seconds and centi-seconds, like if a horse finished in 70 seconds over a scurry of 1200 metres, is noted as 1.10 min. Nowadays it is noted in centi-seconds everywhere, like 70.00 if you want to convert it to centi seconds (should multiply by 100) = 7000 centi seconds. If you put this figure into your formula as a general number (7000) it will return as 1:10:00. As per your formula, it should be taken as 1 hour 10 seconds 0 minutes. However for a racing enthusiast like me it can be taken as 1 minute 10 seconds also.

    Just look what happens if we race goers use this figure as 7000 centi seconds in your formulae, it will correctly show as 1 minute 10 seconds(?) Suppose a horse finishing over a 1200m in 70.60 seconds or in racing terms written as 1.10.60 mins, where 1 minute 10 seconds, & 60 centi-seconds can be counted as 7060, if you put this figure in the formula it will return as 1 minute 11 seconds, that is correct.

    My point is if you can incorporate Centi Seconds in the formulae, it would be of great help to us also.

    Thanks and regards.
    Rajagopal (Mumbai)

  8. Vishy says:

    Awesome techniques !

    I tried with 235960 just to see if it will fail but this is great.

  9. CMC says:

    Although a little longer, this too work:

    =CHOOSE(LEN(A2);A2/(24*3600);A2/(24*3600);LEFT(A2;1)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;2)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;1)/24 + MID(A2;2;2)/(24*60) + RIGHT(A2;2)/(24*3600);LEFT(A2;2)/24 + MID(A2;3;2)/(24*60) + RIGHT(A2;2)/(24*3600))

  10. Converting uneven Text Strings to Time I have imported some data that comes in as a number that I need to convert to h:mm.

  11. Sudhir Gawade says:

    Just come across this while googling

    find interesting challenge and come up with this 

    =TEXT(TEXT(SUBSTITUTE(A1,RIGHT(A1,1),""),"000000"),"00\:00\:00")

  12. Renee Keel says:

    I need to convert a string of numbers representing average minutes, to reflect correct time values. For example, the numbers below currently represent 5.79 minutes, 15.82 minutes, etc.

    I need to convert these values to their correct corresponding value within time parameters. So 5.79 would be something close to 5 minutes and 45 seconds.

    5.79
    15.82
    3.92
    12.40
    6.70
    3.62

    I know there has to be a way to compute this in Excel, it can do anything, I believe!

    Thank you for any and all assistance~

    • Chandoo says:

      @Renee... You can use a formula like this. Assuming A1 has the minutes.seconds,

      =INT(A1) + MOD(A1, 1)*0.6

      If you want to see it in 5 minutes 45 seconds format, use

      =INT(A1) & " mins " & ROUND(MOD(A1, 1)*0.6,2) & " secs"

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