The Swedish calendar eliminated leap years from 1700 to 1740. Following this, it would be equivalent to the Gregorian calendar. This was an exercise in failure since the Great Northern War made the Swedes forget about the calendar and the whole thing needed to be scrapped.
Suppose that when the calendar was made up, a treaty was made between England, Sweden, Denmark, Prussia, Alscace, Strasborg, and the Low countries to adopt it. Most documents would be written dating with Swedish style (or whatever it would be called TTL) while a few would duel date in Swedish Style and new Style. For example, Ireland is operating under New Style, but its monarch is English so a lot of government documentation relating to Ireland...
Would Sweden abandon the calendar when the Great Northern War starts? Would the Swedish calendar last to 1740? Would there be much effects on the world besides widespread confusion until 1740?
Suppose that when the calendar was made up, a treaty was made between England, Sweden, Denmark, Prussia, Alscace, Strasborg, and the Low countries to adopt it. Most documents would be written dating with Swedish style (or whatever it would be called TTL) while a few would duel date in Swedish Style and new Style. For example, Ireland is operating under New Style, but its monarch is English so a lot of government documentation relating to Ireland...
Would Sweden abandon the calendar when the Great Northern War starts? Would the Swedish calendar last to 1740? Would there be much effects on the world besides widespread confusion until 1740?