Why treaty replacement rules use year-end dates

Why use 31 December rather than 11 November as the treaty's replacement cutoff?

The calendar year's end is a practical, broadly understood administrative date without the emotional weight of an armistice anniversary.

The proposal uses 31 December rather than 11 November as the replacement cutoff. Armistice Day carries emotional meaning that would needlessly complicate routine treaty administration. The end of the calendar year gives every delegation a practical reference point within the shared diplomatic calendar. A neutral date makes the agreement easier to explain and apply.