Today, let’s travel in time. Pack your photon ray guns, extra underwear, buckle your seat belts and open Excel!
Of course, we are not going to travel in time. (Come to think of it, we are going to travel in time. By the time you finish reading this, you would have traveled a few minutes)
We are going to learn how to travel in time when using Excel. In simple terms, you are going to learn how to move forward or backward in time using Excel formulas.
So are you ready to hit the warp speed? Let’s beam up our Excel time machine.
Tip 0 – Date & Time are an illusion
Most important tip for Excel time travelers is to understand that Excel dates & times are just numbers. So when you see a date like 17-October-2013 in a cell, you can safely assume that it is a number disguised to look like 17th of October, 2013. To see the number behind this, just select the cell and format it as number (from Home ribbon).
Now that you understood this concept, let’s jump in to the 42 tips. All these tips assume a date or time value is in the cell A1.
Staying at present:
- To have latest star date in a cell, just press CTRL+; (of course, in Excel world, star date is nothing but whatever date your computer shows)
- To have current time in a cell, just press CTRL+:
- Of course, we time travelers are lazy. So pressing CTRL+; every day or CTRL+: every second is not cool. That is why you can use =TODAY() in a cell to get today’s date. It will automatically change when you re-open the file tomorrow.
- Likewise, use =NOW() to get current date & time in a cell. Remember, although time changes every second, you will not see the cell updated unless the formula is somehow re-calculated. This is done by,
- Pressing F9
- Saving / re-opening the file
- Making any changes to any cell (like typing a value, changing a value)
- Editing the formula cell and pressing Enter
- To check if today is after or before the date in cell A1, you can use =TODAY() > A1. This will be TRUE if A1 has a past date and FALSE if A1 has a future date.
- To know how many days are there between TODAY and the date in A1, use =TODAY() – A1. This will be a negative number if A1 is a future date. To see just the number of days (without negative sign), you can use =ABS(TODAY()-A1)
- To know how many hours are left between the time in A1 and current time, use =(NOW()-A1)*24.
- While the above formula works, it shows hours and fraction. To just see hours and minutes left, you can use =TEXT((NOW()-A1), “[hh]:mm”). Note: This formula works only when A1 < NOW().
- To know how many weeks are left between TODAY() date and a future date in A1, use =(TODAY() –
A1)/7 - To know how many months are left between TODAY() and date in A1, use = DATEDIF(TODAY(), A1, “m”).
Related: How to use DATEDIF function. - To know which month is running, use =MONTH(TODAY())
- To see the month name instead of number, use =TEXT(TODAY(), “MMMM”). This shows the month’s name in your Excel language.
- To know which year is running, use =YEAR(TODAY())
- To see the last 2 digits of the year, you can use =RIGHT(YEAR(TODAY()), 2)
- To find the day of week for TODAY, use =WEEKDAY(TODAY()). This will give a number (1 to 7, 1 for Sunday, 7 for Saturday).
- To see the weekday name instead of number, use =TEXT(TODAY(), “DDDD”).
- To see today’s date alone, use =DAY(TODAY())
- To know if the present year is a leap year or not, see this.
Going back in time
- To go back by 6 days from the date in A1, use =A1-6
- To go back to last Friday use =A1-WEEKDAY(A1, 16). This works in Excel 2010, 2013. If your time machine is old (ie you have Excel 2003 or earlier versions), you can use =A1-CHOOSE(WEEKDAY(A1), 2,3,4,5,6,7,1)
- To go back by 5 weeks, use =A1-5*7
- To go back to start of the month, use =DATE(YEAR(A1), MONTH(A1),1)
- To go back to end of previous month, use = DATE(YEAR(A1), MONTH(A1),1) – 1
- Or use =EOMONTH(A1,-1)
- To go back by 2 months, use =EDATE(A1, -2)
- To go back by 27 working days, use =WORKDAY(A1, -27). This assumes, Monday to Friday as working days.
- To go back by 27 working days, assuming you follow Monday to Friday work week and a set of extra holidays, use =WORKDAY(A1, -27, LIST_OF_HOLIDAYS)
- To go back by 7 quarters, use =EDATE(A1, -7 * 3)
- To go back to the start of the year, =DATE(YEAR(A1), 1,1)
- To go back to same date last year, = DATE(YEAR(A1)-1, MONTH(A1), DAY(A1))
- To go back a decade, =DATE(YEAR(A1)-10, MONTH(A1), DAY(A1))
Going forward in time
We, time travelers are smart people. Once you know that turning the knob backwards takes you to past, you know how to go to future. So I am giving very few examples for going forward in time.
- To go to the 17th working day from date A1, assuming you use Sunday to Thursday workweek, use =WORKDAY.INTL(A1,17,7). This formula works in Excel 2010 or above.
- To go to next hour, use=A1+1/24
- To go to next day morning 9AM, use =INT(A1+1) + 9/24
- To go to 18th of next month, use =DATE(YEAR(A1), MONTH(A1)+1, 18)
- To go to end of the current quarter for date in A1, use =DATE(YEAR(A1), CHOOSE(MONTH(A1), 4,4,4,7,7,7,10,10,10,13,13,13),1)-1
- To go to a future date that is 4 years, 6 months, 7 days away from A1, use =DATE(YEAR(A1)+4, MONTH(A1)+6, DAY(A1)+7)
Finding the amount of time traveled
- To know how many days are between 2 dates (in A1 & A2), use =A1-A2
- To know how many working days are between 2 dates, use =NETWORKDAYS(A1, A2) (remember: A1 should be less than A2).
Fixes for common time travel hiccups
- If you see ###### instead of a date in a cell, try making the column wider. If you still see ######, that means the date value is not understandable by Excel (negative numbers, dates prior to 1st of January 1900 etc.)
- Often when pasting date values in to Excel, you notice that they are not treated as dates. Use these techniques to fix.
- If you pass in-correct values or use wrong parameters, your date formulas show an error like #NUM or #VALUE. Read this to understand how to fix such errors.
Quiz time for time travelers
I see that you safely made it here. I hope you had a good journey. Let me see how good your time traveling is. Answer these questions:
- Write a formula to take date in A1 to next month’s first Monday.
- Given a date in A1, find out the closest Christmas date to it.
Building your own time machine? Check out these tips too
If you work with date & time values often, then learning about them certainly pays off. Read below articles to one up your time travel awesomeness.
- Using Date & Time in Excel
- How to calculate common holiday dates in Excel?
- How to calculate payroll dates?
- How to sort a bunch of birth dates by birthday?
- Check if two dates are in same month
Good luck time traveling. I will see you again in future 🙂
PS: Make sure you attempt the challenges and post your answers in comments.
25 Responses to “Display Alerts in Dashboards to Grab User Attention [Quick Tip]”
I prefer the red,grey,light grey,black icon set. I've also used in-cell pie charts from Fabrice's Sparklines for Excel as an alert which could also provide another piece of information.
I prefer the red,grey,light grey,black icon set. I've also used in-cell pie charts from Fabrice's Sparklines for Excel as an alert which can also provide another piece of information.
For Excel 2007, your formula should do the same as the Excel 2003 version, so that non-alert rows are blank - if they are 0, the unnecessary green icon will show
Hi Chandoo,
Nice Post !! just to add something for EXL 2003, we can also 4 Ifs and link to the alert data
For Ex: If we have alert data in Cell A2 and want to split in 4 orders namely <25%, 25-50%, 50-75% and 75%< then we can following formula and put fonts as you have suggested :
=IF(A2<0.25,CHAR(153),IF(A2<=0.5,CHAR(155),IF(A2=0.76,CHAR(152)))))
And then using Conditional Formating we can dashboard reflected on different COLOURS as per their respective alert.
Best Regards
Rohit1409
Hi Chandoo,
Nice Post !!! just to add something for EXL 2003, we can also 4 Ifs and link to the alert data
For Ex: If we have alert data in Cell A2 and want to split in 4 orders namely <25%, 25-50%, 50-75% and 75%< then we can following formula and put fonts as you have suggested :
=IF(A2<0.25,CHAR(153),IF(A2<=0.5,CHAR(155),IF(A2=0.76,CHAR(152)))))
And then using Conditional Formating we can dashboard reflected on different COLOURS as per their respective alert.
Best Regards
Rohit1409
The Complete formula [Don't Know how it got cut ]
=IF(A2<0.25,CHAR(153),IF(A2<=0.5,CHAR(155),IF(A2=0.76,CHAR(152)))))
PS : Use in single line [I have split it to avoid cuts 😉 ]
Hi Chandoo..
why it is not displaying the complete formula..
anyways here is the balance
"=IF(A2<0.25,CHAR(153), IF(A2<=0.5,CHAR(155), IF(A2=0.76,CHAR(152)))))"
@Rohit... your formulas are fine. Just that the width of comment area is fixed and hence my website is cropping it at 640pixels. I just edited your formula and added few white spaces so that it wraps nicely.
Very good idea btw.. kudos!
Hi,
Maybe just go for 'bold' ; 'underline' or 'italic' to draw the users attention? Those methods (if those can be called methods) are used cross media type (books, journals, blogs, billboards, ...) to guide the readers eye to valuable information.
Just a basic thought
@Tom.. good idea..
[...] has a very nice writeup on how to add such alerts to dashboard sheets. Possibly related posts: (automatically generated)Divide your data set into workbooksHow to enforce [...]
Hi Chandoo,
You certainly grabbed my attention! although I wasn't sure what my brother (Suresh) and cousin (Shyam) were doing right, and I was doing wrong? 😉
I love your blog btw - Many thanks for all your hard work in unravelling the secrets and mysteries of Excel!
Best regards
Ramesh
I thought I saw an advertisment for a book about learning excel called excel himalaya or something. It cost about 35.00 us money but seemed to have the things I need to have my admin assistant to start to use. I was hoping to start with this book and then send her to school if she shows some interest and aptitude. Any help on this would be appreciated. Thanks
Great web site and information!!!!
@Jeff... checkout http://chandoo.org/wp/2010/08/25/excel-everest-review/
thanks, your website is awesome!
[...] Alerts to highlight focus areas [...]
[...] There are lots of numbers in this dashboard. I would suggest adding few more visualizations like showing indicators or applying conditional formatting or replacing a table with a chart. This would reduce the [...]
[...] is the same technique as alert icons in dashboard. Just that I also showed green [...]
[...] is the same technique as alert icons in dashboard. Just that I also showed green [...]
Hi Chandoo
Firstly thanks for all the cool tips on how to use Excel better.
I am new to the site and have a question which you may be able to assist with but dont know if these comment boxes are the best way of asking ?
I am looking at assets and trying to calculate the depreciation total by taking a year (say 2010) adding the expected life of the asset (say 10 years) then comparing that to a future date (say 2015) using an IF statement. The calculation in normal is - IF((year in col B (2010) plus 10years)>year 2015, add a years depreciation, otherwise leave blank). The converted date value does not appear able to add 10 years in order to compare it to 2015. Am I missing something ?
I use the “IF” Statement in conjunction with Conditional Formatting in MS Excel to give verbiage to alert one of a required action, dependant on a review date. This makes a visual stimulus, plus it clues one as to what the conditional format is trying to warn you about and what follow-up actions are required.
Wow, I'm really impressed with dashboards. I had no idea this stuff was even possible with excel. I'd like to offer an interactive dashboard to my customers, showing analytics of their data. I have a .pdf file with the datapoints. I'd like them to enter the data on my website, and be able to see their data. Is something like that possible.
Hi Chandoo,
I've recently purchased the package for both templates.
In the portfolio dashboard,under the calculations worksheet, I'm attempting to change the date range in the gantt chart to show only the range of the project that starts in late 2013. How do I do this?
Thanks
Adam
[...] is the same technique as alert icons in dashboard. Just that I also showed green [...]
Hi Chandoo,
I'm new at Excel Dashboard and found your blog really useful and helpful! It's very nice of you that you dedicate your time to do this.
Could you please explain how can I use Alerts based on dates on a Dashboar?
For example, if a target date is coming closer to the actual date, the alert is yellow or red.
I'd really appreciate some help!
Thank you
Where can I download the file Excel of Averall Statistics ???
Thanks a lot.