Excel datedif function missing. Replace “date1” and “date2” with the cell references for the two dates, and replace. Excel datedif function missing

 
 Replace “date1” and “date2” with the cell references for the two dates, and replaceExcel datedif function missing  Then we may be able to check the behavior

datepart The units in which DATEDIFF reports the difference between the startdate and enddate. unit – is used to tell the function what difference to return. JoinedUsing the DATEDIF Function. HansV MVP. คำเตือน: Excel มีฟังก์ชัน DATEDIF เพื่อสนับสนุนเวิร์กบุ๊กที่เก่ากว่าจาก Lotus 1. Unit – tells the function to find the number of days (“D”), complete months (“M”), or. If an Excel function requires a specific data type, such as a number or text, and a cell contains a different data type. You can simply type =DATEDIF ( in a cell to use it. Deals for students and parents. Insert the start date and add a comma. asks: Is DATEDIF gone from Excel? It is missing from the latest beta builds. Q2. mm. The DATEDIF function is an in-built function in Excel. The following formula will give you the total number of days between the two dates: =DAYS (B2,B1) Note that you can also manually specify the dates in the Days function by putting it in double-quotes. Enter an equal sign and type the DATEDIF. DATEDIF is practically an insider tip, as the function is not even included in the internal list in the software. It is now, but with a warning that the result is not always accurate: DATEDIF function . 501. The functions that I am currently attempting to use are DATEDIF, SORT, UNIQUE and FILTER. go to home tab and change cell format to Number and adjust # of decimal places to 0 and you should get 56 in that case. If you are using Excel 2007, select Microsoft Office Button > Excel Options. If the earlier date is in A1 and the later date in B1 you can just use: =B1-A1 and format the cell as a number, in stead of =DATEDIF(A1. Now you will get the time difference between two dates in days, hours, and minutes. Many Thanks Cheers David . Because, the DATEDIF function returns the number of complete months elapsed between dates, and this formula works on the months’ numbers that belong to different dates. Answer. 2. Dates in Excel work as a number of days since Jan 0, 1900. This cell will show the number of days between your specified dates. We got the age of Jon Snow using DATEDIF function. Excel. "Y" is the reference to the year's parameter in. Example 2: Using Cell References Where Dates are Entered as Text. Luckily, it is still there, but you have to know the arguments because Excel won't provide any guidance. Use this function to search for an item in a range of cells, and then return the relative position of that item in the range. อาการแปลกๆ อันอื่น. It should be in quotes. Convert. DATEDIF: The DATEDIF function calculates the difference between two dates in various units, such as days, months, or years. undefined. That's it. These are the first and second arguments in our function. You can use the following formula to calculate the person’s age: = DATEDIF (A1, A2, "Y") This will give you the person’s age in years. Almost everything is how I want it, apart from one cell that won't quite work. In my Excel 97, the DATEDIF() function works well. Top Contributors in Excel: HansV MVP - Jim_ Gordon -. What are the options for calulating differneces between two dates? Thanks. Important note – Unlike the other functions, the function will not appear as you start to type this date function. Reply. finickyone • 4 yr. Release the mouse button and select either Fill Months or Fill Years from the menu that displays. Use the DATEDIF function when you want to calculate the difference between two dates. Alternatively, if you type 11/2, Excel shows a date, such as 2-Nov or 11/02/2009, instead of dividing 11 by 2. MSFT has been trying to deprecate the use of DATEDIF for many years. What's new. DATEDIFF Function. IF and DATEDIF showing the difference in dates without zero valuesThe DATEDIF function stands for “ date difference ” and it calculates the number of Days, Months, or Years between two dates. •Beware of Scammers posting fake Support Numbers here. If you want to specify the custom weekends, you can use the NETWORKDAYS. In reply to BillLohne1's post on April 24, 2023. When we use "m" in the unit argument, Excel computes the. Recommendation: Do not use the undocumented DATEDIF function. This is the optional part of the formula. #3. We would like to show you a description here but the site won’t allow us. Upvote 0. 3. simply subtract the smaller date from the later date. But there is no benefit to using DATEDIF for calculating days. Roundup. Education. "Y" – (years) the number of full years. To install it, simply press ALT+F11 to go into the VB editor and, once there, click Insert/Module on its menu bar, then copy/paste the above code into the code window that just opened up. The syntax for it is as follows: =DATEDIF (start_date, end_date, unit) DATEDIF takes in three arguments: start_date is the earlier date in the calculation. Sometimes this function may result in a wrong. If the earlier date is in A1 and the later date in B1 you can just use: =B1-A1 and format the cell as a number, in stead of =DATEDIF(A1. You can use the DATEDIF function in Excel to calculate the employment period. Commonly used datepart units include month or second. Enter the missing numeric values. The first part of the formula is an exact copy of the formula used to return complete months i. This computes the number of complete months in the period. Nevertheless, the function persists. To calculate the number of days ignoring blank cells, none of the available functions in Google Sheets has any supporting argument. INTL(A3,B3,1))) by giving it a name (very similar to naming a range or. DATEDIF is practically an insider tip, as the function is not even included in the internal list in the software. This is a great function if you work. 00 (=DATEDIF (C5,D5,"D") In the above case 2016 Leap year where DATEDIF missing 29th February, 2016 i. Enter the start_date, end_date, and the desired unit (enclosed in double quotes) within the parentheses. Jon Wittwer September 1, 2017 14 comments. Neither Excel XP or Excel 2013 are aware of it, so it's pretty strange that it. I have a schedule that needs your help. Then type a formula like one of the following. Step 4: In the 'Search for Function' dialog box, type DATEDIF. unit – is used to tell the function what difference to return. Re: DATEDIF is returning a date when asking for amount of years. The Datedif function is used to calculate interval between two dates in days, months or years. For more information about the DATEDIF function, please see Excel DATEDIF - calculate difference between two dates. Let’s see how DATEDIF works, even if the function doesn’t appear to be working in your version of Excel. But, I didn't find it listed in the fx place, nor in the HELP place. I have a spreadsheet with many rows of data and two columns, one for the start date and one for the end date. incase between dates are missing last date minus before date. The above is as suggested by Sergei Baklan in the thread below. 1/8/2016 4/7/2016 90. Use the DATEDIF function. Warning: If the Start_date is greater than the End_date, the result will be #NUM!. Then we may be able to check the behavior. As a worksheet function, the DATEDIF function can be entered as part of a. Bentuk umum formula DATEDIF adalah sebagai. Then, we subtract that from the original end date in cell. I'm trying to calculate the difference between two dates in Excel. Step 2: Now Select the cell where you want the age of the person. Let's say that cell A1 contains someone's birthdate, and cell B1 contains the current date. e. INTL (A3,B3,1))) by giving it a name (very similar to naming a range or a cell) and then using. We show you how to quickly and easily ana. Excel DATEDIF ฟังก์ชัน. Windows. To do this, you may have to work out the DATEDIF Function into three different functions. Its syntax includes three arguments: start_date, end_date, and unit. But if you see them appear in older Excel models at least you’ll be the full bottle. 1. #2. g. Burn to learn focuses on a simple way to solve this problem. Technically, the NOW function returns the current date and time, but you can format as time only, as seen below: TODAY () // returns current date NOW () // returns current time. A formula uses a function that iterates, such as IRR or RATE, and it can’t find a result. Flexible Payments. The function does it in the reverse order to avoid leap years and months with different lengths eg Dec is 31 days , Sep is 30Step 2: In a different cell, use the DATEDIF function to calculate the difference: =DATEDIF(A2, B2, "m") The syntax for DATEDIF is DATEDIF(start_date, end_date, unit). The DateDiff function will give you exactly what you need: timestamp1 = "2010-01-10-01. Get age from birthdate. If a workbook is set for automatic recalculation, you do not need to press F9 for recalculation. In conclusion, the TODAY function is a versatile and useful formula for working with dates in Excel. To avoid these unexpected. 3 is correct though in the context of what DATEDIF provides, since there's 3 hours (and not 4) between 12:09PM and 3:59PM. The INT function then rounds the number down to. Example 3. Complete days between. From the SUPPORT PAGE: Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3. Example #1: Calculating the number of days between two dates (excluding weekends) In the above example, the Excel NETWORKDAYS function calculates the number of days between 20th December and 10 January. D = days. “m” gets the between dates. You can specify the time unit of the return value in the unit argument. DATEDIF is just designed to return whole numbers. . In column F, we can use the following variations of the DATEDIF function to calculate the difference in years, months and days respectively. For example, if you have a start and end date in cells A2 and A3, you can just write = DATEDIF (A2, A3, “d”), which returns the number of days between the two dates. I've made sure that all my cells are in short date format (even long date format too). As an example, here is the calculation I am trying to make:Here is the formula: =DATEDIF(Date-of-Birth,TODAY(),"md") This will return the rest of the days between the date of birth and today’s date after completing years and months. We can use the below function to find the number of days left in the year from the given date. If you always want to compare month-ends you could use this formula. It does not work properly in all cases and they are not going to fix it. . If the start_date is greater than the end_date, the result will be #NUM!. Prepare the DATEDIF function by typing "=DATEDIF" into another cell. Re: I can't get the DatedIf function to work -- returns #value! In D2 and E2 you've text date not excel date. Windows. sample table below mentioned required all results in one formula. This particular formula will return the number of years and months between the start date in cell A2 and the end date in cell B2. F5=DATEDIF (D5,E5,”y”) // returns 2. 0. DATEDIF function (microsoft. Usage: =DATEDIF(start_date, end_date, unit) Number of days between 2 dates. When I say available functions, I meant to say DAYS, DATEDIF, NETWORKDAYS, and. formule =datumverschil werkt niet / formula =datedif Excel does not work. Here, "m" represents months. Now drag the Fill Handle icon from cell E5 to E10. The link below says all about it. The standard syntax for DATEDIF () function is: =DATEDIF (start_date, end_date, unit) The “unit” argument decides if you want to see the difference in days, months or years etc. Also Read: DAYS360 Function In Excel- Counting Number of Days. 2251x10^-308). finickyone • 4 yr. This function calculates the difference between two dates in a variety of units, such as days, months, and years. To get the number of days between 2 dates, you supply the start date in the first argument, end date in the second argument, and "d" unit in the. Office Watch. It was probably included for compatibility with. Warning: If the Start_date is greater than the End_date, the result will be #NUM!. F6=DATEDIF (D6,E6,”m. If it's over it's eligible. DATEDIF is intended to calculate the length of a. 📌 Steps: Click on cell D5 and then type the following formula. As a comment, =end-start returns the same, that's equivalent of above formula. sobressair DATEDIF função. It's there, it's just not in the drop-down function list, and the ScreenTip (showing arg options) doesn't show. First put a start date in a cell, and an end date in another. YEARFRAC is another option. Just paste this function in a new module in the workbook and you can start calling this function. It's not an official Excel function and exists only for compatibility reasons with older spreadsheet programs (like Lotus-1-2-3). I will re-check my result using the Excel DATEDIF() function. Well, let me first commend you on a very complicated formula that works. Calculates the number of days, months, or years between two dates. It obtains this information on the current date by reading the computer's clock. Can't find any reference to the DATEDIF () function. This returns the number of years rounded down. First put a start date in a cell, and an end date in another. 1) DATEDIF is a weird function. Reply; Satheesh Babu says:. It’s syntax is: =DATEDIF(start_date, end_date, unit) start_date – The start date in Excel serial number format. Consider the below example where we have the current date and date of birth. Example 1: Getting the Serial Number of a Date Entered as Text. If you want a static value, use date and time shortcuts. The DATEDIF function does exactly what the name suggests. Subtraction will give you the difference in days (those are the units that dates are stored in). Jan 30, 2016 at 2:05 @RonRosenfeld: Interesting. Next, the value is relayed to the INT function. However, this function is one of the rare function that is not documented while we enter it. Mar 14, 2011. Then the 1 represents the first day of that month. Steps: Firstly, choose the D5 cell and write the following formula down, =DATEDIF (B5,C5,"ym") Then, press the Enter button. Step 1. To keep dates from being interpreted as parts of formulas use the DATE function, for example, DATE(1954;7;20), or place the date in quotation marks and use the ISO 8601 notation, for example, "1954-07-20". In this function, "B2" refers to the date of birth, "TODAY ()" finds today's date, and "Y" indicates that you wish to see the age in years. It creates it using the year in cell E17, and the month in cell E17. This formula will return whole weeks and the remaining days: =INT( (D3-C3)/7)&" weeks "&MOD(D3-C3,7)&" days". yy) to see 01. To use the DATEDIF function, first enter the two dates into two separate cells. So if you want to find out how many days, years or months have passed since you were born, well this is the formula for you! Well you can also extend this to project start and end dates, but you get my point. This means you’ll definitely need to know the format and how to use this function. The expected answers are below. In case of manual dates calculation = 91 days is exact result. Click on a cell where you want to add the function and Select “Formulas > Date & Time > NETWORKDAYS. I can see that I was missing the y / m / d from part of the formula. If you want to use Current date then use this formula in cell T2: =DATEDIF (R2,TODAY (),"Y")&" Years "&DATEDIF (R2,TODAY (),"YM")&" Months "&DATEDIF (R2,TODAY (),"MD")&" Days". "Y" – (years) the number of full years. I suspect that there are quite a few other functions that are also unavailable. It’s not a ‘full’ Excel function because it was added for compatibility with Lotus 123 and has a known bug. First, type A1 type 01/12/1990 in cell A1. Now it’s time to combine all these to create an accurate age. Microsoft 365. thp510 said: I've tried everything. Anyways, let’s see how this formula work. R. Excel SUMIF variable date range. DATEDIF (C3,D3,"M"), the result being 3 months. Educator training and development. Step 2: Click on cell C2 or the cell where you want the result to appear. INT returns number of work days IN the period, includes start and end date. R. Example: You can not enter 11/12/2015 directly into the cell. I need to see how much he gets paid between. Before filling out Excel DATEDIF function to get difference between two dates Word form, make sure that you prepared all the required information. Use the DateDiff function in VBA code. Your result is probably 43 (years), which in a date format (m/d/yyyy) is presented as 2/12/1900. No problems with DATEDIF. Sometimes this function may result in a wrong. By using the unit options in the DATEDIF function, you can choose the unit of time to calculate the age of the person. There are three different formulas in order to calculate the years, months and days respectively: In order to calculate the number of years enter the formula of: =DATEDIF (start_date, end_date, “Y”)ฟังก์ชัน DATEDIF. It returns 26, which is the total number of years completed and ignores the additional months and days after it. For reasons unknown, it is only documented in Excel 2000, but you can use it in your formulas in all Excel versions since that time. DATEDIF ("2016-02-14"; "2016-03-10";"ym") and vba DATEDIFF ("m","2016-02-14", "2016-03-10") The reason DateDiff and DateDif gives you two different values in this usage seems to be because one of them calculates the full month. DATEDIF. =DATEDIF (start,end,unit) Here's the info page at MS for a reference of the units. 2. =DATEDIF (A2,B2,"Y") Explanation – In both formulas, the start_date argument is. #1. 2) Date calculations involving the last days of a. For example, given the 01-Jan-19 as the start_date and the 15-Sep-19 as the end_date, you can calculate. Here's the formula using the DATEDIF function to return the months elapsed between two dates in months and days: =DATEDIF(C3,D3,"M")&"m "&DATEDIF(C3,D3,"MD")&"d". The syntax for it is as follows. Select cell D2, which is the first blank cell in the Duration column. Calculating Age in Excel With the DATEDIF function. Rajen66. Interval. I have used the DATEDIF function to do this in the past, but it doesn't seem to be working correctly this time. . Excel DATEDIF function explained . unit : unit in quotes. The "E-308" part of the notation means "times 10 to the power of -308", so the number 2. com) is practically in any version of Excel, but it is not shown in list of functions (see comment in above support post). The DATEDIF function in Excel can be used to calculate the difference between two dates in years, months, days, or hours. . No problems with DATEDIF. =DATEDIF(B2, TODAY(), "d") We can then click and drag this formula down to each remaining cell in column C: Column C now shows the number of days that each employee has been with the company. Step 1: In this example, we will use the following data to find the no. This thread is locked. The syntax of the DATEDIF function is DATEDIF (start_date,end_date,unit). Microsoft Excel features many functions to help users count the number of business days between two dates or find the start and end dates of a project given a set number of business days. 2) Date calculations involving the last days of a. DATEDIF ( start_date, end_date, interval ) DATEDIF ( วันเริ่ม, วันจบ, รูปแบบการวัดช่วงเวลา ) โดย interval (รูปแบบการวัดช่วงเวลา) คือ. It calculates the DATE+DIF (where DIF may be inferred as DIFFERENCE) and gives us the output in our preferred unit. “y” gets the Years between dates. Column A is the application date, and column J. 24. Hi there! I am trying to create a formula that will show a blank in column G when there is no value stored in column A. Enter the following DATEDIF formula to know the number of months between the two dates. ). I need the number of months, regardless if full months, over any date period!Option 1: Install the Excel PowerUps Premium Suite add-in. في حال كان التاريخ الأول 02-Sep-1 مدخل في الخلية A1، وكان التاريخ الأخير 03-Nov-30 مدخل في الخلية A3، فيمكن استخدام الصيغة الآتية لحساب الفرق بين عدد الأيام مع تجاهل السنوات بين التاريخين. RoundDown. If you want non-integer precision, you should probably do something simpler without DATEDIF like (A2-A1)*24 or =CONVERT(A2-A1,"day","hr"). Type Alt+7 then space then @ sign (using 7 on numeric keypad) The Excel DATEDIF function returns the difference between two date values in years, months, or days. DATE function. Can't find any reference to the DATEDIF () function. The ordinary DATEDIF function returns a single value which can be in terms of years, months or days. Hence, if the DATEDIF function returns a value other than zero, the IF function will return the result of the DATEDIF function; otherwise it returns an empty string “”. For many years, it wasn't officially documented by Microsoft. Products (51) Special Topics (28) Video Hub (447) Most Active Hubs. asks: Is DATEDIF gone from Excel? It is missing from the latest beta builds. 5,0)) (entered as an array formula using Ctrl+Shift+Enter) would do it, but it would be better to restrict to the used range (eg I2:I200) rather than use the whole columns. IFERROR is an elegant way to trap and manage errors. To use the DATEDIF function in Excel, follow these steps: Select the cell where you want the result to appear. com) most probably shall be available on all channels for Microsoft 365, includes semi-annual. DATEDIF is intended to calculate the length of a. It's not an official Excel function and exists only for compatibility reasons with older spreadsheet programs (like Lotus-1-2-3). Utilizing the DATEDIF Function. And finally, don’t confuse the Excel worksheet function, DATEDIF, with the VBA function DATEDIFF, or the Access DATEDIFF function. Select an empty cell where you want to. Excel SUMIF using text and date ranges defined by cell value. Background on what I am trying to achieve: There are two dates in play here,Hi, I would like to calculate the months between 2 dates, but the datedif function does not seem to work in my version Excel (version 16;68). Luckily, it is still there, but you have to know the arguments because Ex. Tip: visit our page about the DATEDIF function to find out how to get the number of weeks, months or years between two dates in Excel. For example, to calculate the difference in years between two dates, enter the following. To use the function, enter the dates into the appropriate cells, and then enter the desired calculation into the cell where you want the result. In Excel 365 this function is still available for backwards compatibility but should not be used. You can use the DateDiff function to determine how many specified time intervals exist between two dates. If you want to calculate months or years rounded up, add half a month or half a year to the formula. =TODAY ()-C2. For example, if the range A1:A3 contains the values 5, 7, and 38, then the formula =MATCH (7,A1:A3,0) returns the number 2, because 7 is the second item in the range. R. Tage zwischen zwei Datumsangaben zählen. This function takes two arguments: the end date and the start date. "M" – (months) the number of full months between two dates. For example, if cell A2. คำเตือน: Excel มีฟังก์ชัน DATEDIF เพื่อสนับสนุนเวิร์กบุ๊กที่เก่ากว่าจาก Lotus 1. อาการแปลกๆ ของ DATEDIF. =DATEDIF (B5,C5,"m") Here, cell B5 represents the start date, whereas cell C5 represents the end date. column C has some empty cells. No DATEDIF () Function in the list. 1. Examples. Step 3: Then, we need topress the “Enter” key, and we will find the difference in days between the two dates. DATEDIF function (microsoft. I am trying to correct this formula =DATEDIF(H80,J80,"D")ISBLANK,0)) , where H80 is the start_date, J80 is the end_date, "D" gives me the number of days in between but if one cell is blank to return. “d” gets the days between dates. See the below given image. In this MS Excel tutorial from ExcelIsFun, the 271st installment in their series of digital spreadsheet magic tricks, you'll learn how to use conditional formatting and the DATEDIF function to add formatting to a cell based on the content of a different cell. 4. A compatibility function that comes originally from Lotus 1-2-3, Excel will not help supply arguments when the function is entered. DATEDIF is useful for calculating the. This formula will calculate the difference between the dates B1 and B2. When a formula returns an error, IFERROR returns an alternative result. For example, you might use DateDiff to calculate the number of days between two dates, or the number of weeks between today and the end of the year. There is a start date a projected end date but I want to know how many days since the start of the job regardless of the end date and leaving blank if no start date entered. I am currently using the formula =IFERROR(DATEDIF(A7,TODAY(),"d"),"0") but when Column A is blank, Column G. Also, if this still does not work, try using semi-colon as separator - i. I'm trying to use DATEDIF to show both the number of years AND months between previous dates and TODAY(), i. Excel for Microsoft 365 Excel for Microsoft 365 for Mac Excel สำหรับเว็บ เพิ่มเติม. This video shows you how to use the Date Dif Function. But I wonder why you want to use that function at all. Step 3: Now write. 2251 is multiplied by 10 raised to the power of -308 (2. I am trying to use DATEDIF function in excel, which is an updated version on office 365, but it seems that the function does not exist. To fix this, change the number of times Excel iterates formulas: Select File > Options. Suppose you have the date of birth in cell B1, and you want to calculate how many years have elapsed since that date, here is the formula that’ll give you the result: =DATEDIF (B1,TODAY (),"Y") If you have the current date (or the end date) in a cell, you can use the reference instead of the TODAY. The standard syntax for DATEDIF () function is: =DATEDIF (start_date, end_date, unit) The “unit” argument decides if. I searched Excel help and function reference, and MS knowledgebase. In the above example, we calculate the difference between the start_date in B6 and the end_date in C6 in years. Select a cell in the third column so that it is adjacent to the start and end dates, as shown below. The “+1” at the end includes the first day of the month. R. '=FindDateDiff(A1,B1)' This function only require 2 dates as arguments and the order doesn't matter. So, here's the formula we'll use to calculate an employee's age: =INT(YEARFRAC(B2, TODAY()) The formula calculates the difference between the employee's birthday and today's date. The DATEDIF Function in Excel. Use Excel functions that automatically ignore text values. Type “B7” for the “Start_date” and “C7” for the “End_date” and click. Want to master Microsoft Excel and take your work-from-home job prospects to the next. ฟังก์ชันทุกฟังก์ชันใน Excel สามารถหยิบจับมาใช้งานได้ แต่ไม่ใช่กับ DATEDIF ซึ่งนอกจากเป็นฟังก์ชันแห่งความลับแล้ว ยังถือเป็นฟังก์ชันต้องห้าม!Want all of our free Excel videos? Download our free iPad app at Microsoft Excel DATEDIF function returns the difference between two date values, based on the interval specified. @Shayan,, Microsoft has been officially included the DATEDIF funtion with Excel 2016 and is available in Help also. Unlike other Excel functions, the syntax of the DATEDIF function does not appear as a tooltip when you type =DATEDIF. 37. =DATEDIF (A2,DATE (YEAR (A2),12,31),"D") The syntax of the DATEDIF function is DATEDIF (start_date, end_date,. Devices for education. This thread is locked. This seems so strange. Adding the Sum of 2 Date Ranges using DATEDIF Function (Showing in Years, Months, Days Format) Ask Question Asked 4 years, 3 months ago. If you want a single cell to sum all the individual rows then something like =SUM (IF (DATEDIF (I:I,J:J,"D")>=45,0. Using the DAYS () function. 01. This time around, we'll calculate the difference in terms of months. It must be of the same format as the start_date. Datedif_leap year. Example 1: Common Uses. Figure 6. Now, you have to find the number of days between the two dates. To get the number of months: =DATEDIF(B2, TODAY(), "YM") To get the number of days use the following units:Click in the cell where you want the number of years of service to appear. Use the DATEDIF function to find the number of years between your dates: Open a spreadsheet and navigate to the two specific dates. "M" – (months) the number of full months between two dates. The DATEDIF function returns the number of years, months or days between two dates and is officially "unsupported". R. This function does not appear in the 'Insert Function' dialog box and is not recognised in the 'Function Arguments' dialog box. The DATEDIF function does exactly what the name suggests. The function for calculating the difference (DIF) between two points in time (DATE) is a relic from Lotus 1-2-3, the predecessor to Microsoft Excel.