Lester Caine wrote:
MY proposal is that if the database returns LMT then it is a flag that we are working with 'pre standard time' dates
OK, although that's a different timestamp than the one Guy Harris was talking about. Guy Harris suggested a timestamp such that all clocks in the named region agree after that timestamp, and some disagree earlier. For Europe/Paris that would be some timestamp in 1945, I expect; that information is not in the database now, and although a number could be deduced from the Shanks & Pottenger data it'd be almost certainly incorrect. You want a timestamp such that time stamps before that date are LMT. For Europe/Paris that's a timestamp in 1891, which *is* deducible from the current database, and which is relatively reliable, at least for Paris. You should be able to implement the flag that you want, by consulting the current database.