Date Calculator: Difference between revisions

*possibly Obituaries  

So how does one calculate a date to get as close as possible to the date of birth?  '''''By using a Date Calculator'''''.

 

*The way to use it is to put in the date of death. '''Subtract''' the number of Years, Months, (weeks if given), Days; then click the calculate button.  The answer is under the lower left corner under the colored box. <br>

 

*If for some reason you have the Date of Birth and have the number of Years/Months/Days when died you would put in the date of birth click '''Add''' followed by the number of years/Months/(weeks)/days then click calculate to get the date of death. <br>

 

The Following is an example of a Date Calculator that is on the Date and Time web page, click on the picture or on the link that is just below the picture to go to a live calculator, have fun doing your own calculating of Dates. (there are other types of Calculators on this page)

[[File:Date calculator.PNG| 700px| link=https://www.timeanddate.com/date/dateadded.html]]

[https://www.timeanddate.com/date/dateadded.html ''online Date Calculator website''] If a pink box shows up just x it)

! bgcolor="#cccccc" scope="col" | Links

! bgcolor="#cccccc" scope="col" | Website  

! bgcolor="#cccccc" scope="col" | Description  

|[http://freepages.rootsweb.com/~fgris/family/brown/agecalc.html Age Calculator]  

|Rootsweb  

| Has 4 various calculators to determine birth date and age including the '''**8870''' method

| [http://www.searchforancestors.com/utility/age.html Ancestor Search Age Calculator]  

| [http://www.searchforancestors.com/ searchforancestors.com]  

| Used when you want to determine the date of death from a birth date and exact age

| [http://www.searchforancestors.com/utility/birthday.html Tombstone Birthday Calculator]  

| [http://www.searchforancestors.com/ searchforancestors.com]  

| This calculator allows Julian calendar '''or''' Gregorian dates to help you calculate birth date when the tombstone only gives the date of death and the exact age. This calendar also allows for a 30 day month or '''**(8870)''' method

| [http://longislandgenealogy.com/birth.html Birth Date Calculator]  

| [http://longislandgenealogy.com longislandgenealogy.com]  

| Used to help you calculate birth date when the tombstone only gives the date of death and the exact age

* Be aware that some of these Websites have other types of calculators with different functions, explanations and tips, with various kinds of information. So check out the rest of the page. (The following examples are what you might find for tips)

* Some calculators may require you to put a 0 in a box instead of leaving a box blank, also using a 0 in front of a single digit month may or may not be required.

* Due to possible errors or different methodology used in Calculated dates from original calculations. (found on the tombstone, obituary or death certificates) , please make a note in your records that the date was calculated..  

* The calculator could also be used to calculate birth year from census data or birth date from wedding date and age.

* When calculating Dates using the Julian or Gregorian Calendar you can't use the two together.

* There is what is called a 30-day-month/or '''**8870''' method which assumes that all months have 30 days, many of the headstones and obituary ages at death appear to have been computed using this method. It's an approximation which agrees with the exact calendar month method about 2/3 of the time.) <ref>[http://www.searchforancestors.com/utility/birthday.html Ancestor search]</ref>

* Because of the change from the Julian to the Gregorian Calendar, the calculator may not work for anyone born between Sept. 2, 1752 and Sept. 14, 1752 or when days were lost at the calendar changeover.<ref>[http://www.searchforancestors.com/utility/birthday.html Ancestor search]</ref>

* Be aware the calendar was changed from Julian to Gregorian in which ever country for which you are performing the calculation. See the [http://www.searchforancestors.com/utility/gregorian.html change from Julian to Gregorian calendar Dates] by country.<ref>[http://www.searchforancestors.com/utility/birthday.html Ancestor search]</ref>

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