Apps - Calculations and Formatters
Add or subtract years, months and days to or from a date, This calculator enables you to add or subtract days, months and years to a date to calculate a past or future date. copyright Time and Date.
Buckner's Birthdate Calculator, calculates birthdate from death date and age of death in day/month/year format. Use Gegorian Calemdar for European dates after about 1580 and English dates after September 1752, Julian Calendar for English dated prior to October 1752.
The NAAIRS Parser, by Keith Meintjes, who writes: My idea is to aid my research, by adding a field for notes. Now, I have a permanent record of the documents I have looked at. The spreadsheet can easily be searched and sorted.