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BJC-5.0 lets you calculate an event’s exact position inside Jubilee structure using:

• Jubilee Cycle number (1–120)
  
  
• Complete weeks (0–6)
  
  
• Additional years (0–7)
  
  

Outputs include:

• Anno Mundi (AM) year
  
  
• Astronomical AD year (derived via the calculator’s fixed offset)
  
  
• BCE/CE display mode (historical format with “no year 0”)
  
  
• Year-in-cycle
  
  
• Week number
  
  
• Year-in-week
  
  
• Sabbatical indicators
  
  
• Closing-year indicators
  
  
• Jubilee-year handling (Year 50 flagged separately)
  
  

This creates a structured “address” for every event in Jubilee time.

BJC-5.0 includes two synchronized timeline grids for immediate visual verification:

A) AM 7×7 Grid

• Displays Years 1–49 of a Jubilee cycle (7 weeks × 7 years)
  
  
• Marks:
  
  
  • First year of the cycle
    
    
  • Sabbatical years
    
    
  • Final year (Year 49)
    
    
  • Target year highlight
    
    
• Keeps Year 50 handled as a separate Jubilee-year flag (not forced into the 49-year grid)
  
  

B) AD / BCE-CE 7×7 Grid

• Mirrors the AM grid year-for-year
  
  
• Displays:
  
  
  • Astronomical AD values (with year 0)
    
    
  • Or Historical BCE/CE values (no year 0)
    
    
• Keeps target highlights synchronized across both grids so a selected AM year is automatically located in the second grid.
  
  

This dual-grid design helps researchers quickly align Jubilee structure against conventional era labeling without altering the underlying math..

BJC-5.0 includes a deliberate era-mode selection so users can work with the display system they need:

• Astronomical (Year 0 allowed): precise numerical continuity (… −1, 0, 1 …)
  
  
• Historical (No Year 0): BCE/CE formatting for teaching and publication
  
  

This feature is display-only; the core calculations remain consistent.

BJC-5.0 includes a 7-slot event tracker built for real research workflows:

• Store up to seven computed events
  
  
• Save each event with a label and full computed output
  
  
• Compare event placements quickly without retyping
  
  
• Review multiple key events in sequence while staying near the grids
  
  

This is designed for real timeline work, genealogical sequencing, prophecy intervals, and multi-event alignment.

BJC-5.0 is designed to support “distance in time” analysis between events stored in the tracker, including:

• Years between events (ΔYears)
  
  
• Jubilee distance (ΔYears ÷ 50)
  
  
• Weeks distance (ΔYears ÷ 7)
  
  

This makes the tool useful not only for locating years, but for proving or disproving interval claims by direct calculation.

BJC-5.0 includes a locator tool for reverse mapping:

• Enter an AM year 
• Instantly receive:   
  • Jubilee cycle number   
  • Year-in-cycle   
  • Week + year-in-week position   
  • Era display in AD/BCE/CE form   
• Supports decimal position inputs (SJF-style decimal placement), allowing “location” style lookups that mirror serious chronography workflows.   

This transforms the calculator from a “forward calculator” into a true research locator.

BJC-5.0 includes a validation system designed to protect the calculator’s integrity during updates:

• A visible banner confirms that locked test vectors PASS 
• Ensures the math is preserved across feature changes and UI refactors   
• Helps researchers trust repeatability by making system self-checks visible, not hidden 

BJC-5.0 includes a validation system designed to protect the calculator’s integrity during updates:

• A visible banner confirms that locked test vectors PASS
  
  
• Ensures the math is preserved across feature changes and UI refactors
  
  
• Helps researchers trust repeatability by making system self-checks visible, not hidden
  
  

BJC-5.0 is structured for speed and usability:

• High-use panels are positioned to minimize scrolling
  
  
• Core workflows remain near the grids
  
  
• Auxiliary reference sections (such as DCM explanations) are placed lower for quick access without slowing core operation
  
  

BJC-5.0 supports clean layout behavior intended for integration into larger research ecosystems, allowing it to function as:

• a standalone tool
  
  
• an embedded research panel
  
  

a companion calculator inside a larger platform (such as BJMS)
 

BJC-5.0 is the “serious researcher” upgrade path. The free calculator introduces the system; BJC-5.0 expands it into a tool suitable for ongoing, multi-event research and comparative analysis.

BJC-5.0 is for the user who:

• needs repeatable Jubilee calculations
  
  
• wants a grid-based visual verification system
  
  
• compares multiple events and measures the distance between them
  
  
• researches chronology across both canonical scripture and structured non-canonical timelines
  
  

needs a tool built for analysis, not just curiosity