Comment by macu

Someone could add an approximation range syntax if they derived their own fuzzy dates specification. I've been considering the problem of fuzzy dates for a project idea. Maybe something like "..<" could join the first and last days of an approximate range, like "156X..<1585-12-25", which would be equivalent to "156X..1584-12-25", to say anywhere from 1560 to 1584. Depending how much information you want to encode you can imagine other extensions like showing the most confident guess. At that point it would be simpler to create tables to encode the available information.