What problem does it solve? Historical records were written under different calendar systems, and jurisdictions adopted the Gregorian calendar at different times. Misreading a Julian, Old Style, or Quaker numbered-month date can place an event in the wrong year, corrupting your genealogy research and creating false conflicts between sources. ## Core Features & Use Cases - Julian-to-Gregorian Conversion: Applies the correct era day offset for the jurisdiction where a record was created, using the convert_calendar tool's adoption table. - Old Style/New Style Year Correction: Adjusts January–March dates recorded when the civil year began later than January 1, and resolves double-dated years like "1749/50". - Quaker Numbered Months: Translates Friends register month ordinals into modern month names, handling the pre-1752 and post-1752 numbering eras. - Use Case: You find an English baptism recorded as "10 June 1650" and a matching Dutch record dated "20 June 1650". This Skill confirms both describe the same day by applying the 10-day Julian-to-Gregorian offset for England, avoiding a false conflict flag. ## Quick Start Ask the assistant to convert the date "6 January 1745/6" from an English parish register to the modern Gregorian calendar.
