Prince Edward Island Timezone
I've long wondered whether there's a case to be made for a Prince Edward Island timezone file entry. We're America/Halifax right now, but if I can establish that historically our dates of adopting different standards (daylight time, for example) are different from Halifax, that would be all we'd need to become America/Charlottetown.
3 Geo. VI, Chapter 23, An Act Respecting the Provincial Statutes, 1939
6(m) a reference to time is to be deemed a reference to Atlantic Standard Time, (sixty degrees west longitude) being twelve minutes and twenty-nine seconds fast of the local time of the meridian which passes through the Provincial Clock on the law Courts Building in Charlottetown.