Counting Down to the YEAR 3000, with the

Experimental Countdown Timer for Multiple Units

This timing device is available online,

on the BOTTOM of this webpage,

and it can also be downloaded in

the Microsoft Excel format.


Created by David Alderoty 2013

I have over 90 websites with e-books and articles I wrote, and with various types of calculation devices I created.  This includes devices for business mathematics, algebra, trigonometry, calculus, and time and date computations.  A list of links to access my 90 websites are presented at:  My resume is at You can contact the author by e‑mail, or by left clicking on these words for a website communication form.




(Section 1)




This website has the Experimental Countdown Timer for Multiple Units, which is counting down to the YEAR 3000, January 1, 12:00 AM in days, hours, minutes, seconds, deciseconds, centiseconds, milliseconds, microseconds, shakes, nanoseconds, picoseconds, femtoseconds, and attoseconds.  There are separate displays for each of the units mentioned above, on the Countdown Timer.  Note the online Countdown Timer is embedded in the bottom of this webpage, just below section 6.




(Section 2)




The Experimental Countdown Timer for Multiple Units was created for demonstration and experimental purposes, and it is not designed as a practical device, but it functions perfectly, with a high level of precision.  Most of the readouts are displayed with a number of decimal places, and the smaller units of time are displayed in scientific notation, when the numbers are very large.      When you see an e next to a number displayed by this Countdown Timer, it means that the number is in scientific notation.  For example, ‑2.79704396349e+22 PICOSECONDS, is in scientific notation.  When this number is converted to the conventional format it is as follows:

 ‑27,970,439,634,900,000,000,000 PICOSECONDS.

     Note the minus sign on the numbers presented above.  That is the readouts displayed by this Countdown Timer have a minus sign, because it is countdown time.  However, if this device passes time zero, the minus sign is no longer displayed, because the readout changes to elapsed time.




(Section 3)




The time related readouts on the Countdown Timer are based on the time that the device was accessed on your computer. For example, if you access the Countdown Timer on 2/5/2014, at 12:35 PM, this time and date will not change, unless you press the update button.  The Countdown Timer also can be updated by entering or deleting data, or by opening and closing the device.




(Section 4)




If you want to use this Countdown Timer, for a different time interval (other than the year 3000) you can set it for a time period as short as one minute, a few minutes, an hour, a day, a week, a month, a year, a decade, a century, or three or four thousand years from now.  To change the time interval, follow the steps below:


Step 1) Delete the end date in the three white boxes on the countdown timer, with the words: MONTH, DAY, and YEAR.


Step 2) Enter the month, day, and year, you prefer in the three white boxes.  If the time interval is relatively short, you can enter today's date.


Step 3) Enter the end time or time zero, you prefer. To do this left click on the white box, on the left side of the Countdown Timer, with the words Enter Hours and a menu will open.  Scroll through the menu to find the hour you want, and then left click on it.  When this is done, the hour you selected will be displayed, and the menu will automatically close.  


Step 4) To enter the minutes, used the same technique as described in step 3.  This is done with the white box on the right side of the Countdown Timer, with the words Enter Minutes.  If you are setting a time that is exactly on the hour, such as 12:00 AM, set the minutes to 0.




(Section 5)




The JavaScript version of the Countdown Timer can function online, but it is not possible to save any changes you make with time and date, with most web browsers, except for Firefox.  If you want to say changes you made in the Countdown Timer or any other JavaScript device, follow the four steps listed below, and use the Firefox web browser. (If you do not have the Firefox browser, you can download it for free from


Step 1) Make sure that you have the online Countdown Timer opened in the Firefox web browser.


Step 2) Press the s key while HOLDING DOWN the Ctrl key.  When this is done, a dialog box will open, and you will see the location where the file will be saved, and the words Web Page, complete. If the default file location is not satisfactory, or if you do not see the words: Web Page, complete, use the tabs on the dialog box to make the necessary changes.


Step 3) Click on the save button on the dialog box, and the dialog box will close, and a copy of the online Countdown Timer will be saved on your computer, with the time and date you set.


Step 4) Each time you want to save the JavaScript version of the Countdown Timer, you must use a different file name, or a different file location.  This is because Firefox will not overwrite the existing file.




(Section 6)




If you want to download the Experimental Countdown Timer for Multiple Units in the Microsoft Excel format, left click on one of the links below.  It is easier to save the date and time you enter in this version of the Countdown Timer, but it requires Microsoft Excel and Windows.


If you want the Countdown Timer for Microsoft Excel 2007-2010, left click on these words.


If you want the Countdown Timer for Microsoft Excel 1997-2003, left click on these words.


There are two online JavaScript versions of the Experimental Countdown Timer for Multiple Units. This includes a printer friendly version, without the instructional text presented above, and a version embedded in this webpage.


For the printer friendly version, left click on these words.


The embedded version is presented below these words



Please fill or choose the data marked red and try submitting again.


       MONTH  DAY YEAR      
      Enter month with a number from 1 to 12  Enter day with a number from 1 to 31 Enter the year with four digits        
     You can change the end date by deleting the date in the three boxes above, and entering the date you prefer.  Before you  enter or delete a number left click on the relevant input box.    
      Enter Hours   Enter Minutes      
    Left click on the white box above, and a menu will open.  Then scroll to the time you want to set as hour zero.

Left click on the white box above, and a menu will open.  Then scroll to the time you want to set as minute zero     
    Counting Down to:    
  Countdown time in days  
  Countdown time in hours  
  Countdown time in minutes  
  Countdown time in seconds  
  Countdown time in deciseconds, which is one 10th of a second (1 second = 10 ds)  
  Countdown time in centiseconds, which is one 100th of a second (1 second = 100 cs)  
  Countdown time in milliseconds, which is one 1000th of a second (1 second = 1000 ms )  
  Countdown time in microseconds, which is one millionth of a second (1s=10^6 microseconds)  
  Countdown time in shakes,which is one 100 millionth of a second (1 second = 10^8 shakes)  
  Countdown time in nanoseconds, which is one billionth of a second (1 second = 10^9 ns)  
   Countdown time in picoseconds, which is one trillionth of a second (1 second = 10^12 ps)  
  Countdown time in femtoseconds, which is one quadrillionth of a second (1 s = 10^15 fs)  
  Countdown time in attoseconds, which is one quintillionth of a second (1 s = 10^18 as)  
  Countdown time in days, hours, and minutes  
  Countdown time in days, hours, minutes, seconds,and fractions of a second  
  Countdown time in days, hours, minutes, seconds, and fractions of a second  
  You can place your comments in the white box below, and press the submit button to transmit them to the author, David Alderoty .    
Place comments in box above, and transmit them to author, by clicking on submit button