June 8, 2019
6:24 p.m.
Lester Caine wrote:
And Ireland is a case where pre-1970 data is different to the set of data currently being used!
I didn't follow everything you said, but above statement may give other readers the misimpression that tzdb has two sets of data for the Republic of Ireland. It doesn't; it has only Europe/Dublin. As far as we know, Europe/Dublin is reasonably accurate for Dublin for the indefinite past, and is also accurate for the Republic of Ireland since it was founded. No other reliable "pre-1970 data" is available for the Republic of Ireland, as far as I know.