Re: POSIX-TZ without rules

Both solutions are suboptimal. The first mishandles old dates; the second assumes the New York City DST rules, whereas it'd be better to assume only the US rules. But clearly something should be done to the tz code to fix the problem, and either solution is acceptable.

Unfortunately, the optimal solution is to load the rules from a file, which we already do, but that doesn't work if the database is uninstalled. My inclination is to say "the optimal solution depends on the database being installed; if we can't even find 'posixrules', use some possibly-wrong hardcoded rules".