Dates Apart Calculator

How to Use This Calculator

• Enter a starting date and an ending date.
• Entering a 2 digit year gives a year from 1900 - 1999, on most systems. Enter the year using 4 digits for any other years. Using 4 digits always works for any year.
• Unfortunately, this means that you cannot enter a date in the first century AD. Also, you cannot enter dates BC. These are limitations of javascript's date handling code that I am too lazy to code around, given the limited potential use.
• It does not matter whether the earlier date is in the first or the second box.
• If either box is left blank, today's date will be inserted there and used for the calculation. This can be used to determine how long until/from any given day, such as your birthday.
• Results are given in number of days, and in "years / months / days" format.
• The calculator accounts for the "missing days" dropped when the transition was made from the Julian to the Gregorian calendar. (October 1582 in the Vatican, September 1752 in the US and UK, other dates elsewhere) In the UK and colonies (including the US) the date following 9/2/1752 is 9/14/1752, so that the dates 9/3/1752 - 9/13/1752 do not exist. The calculator uses the UK transition dates.
• The Gregorian transition code is a little buggy.