On Wed, Jan 07, 2015 at 04:02:38PM +1300, Lawrence D'Oliveiro wrote:
On Wed, 7 Jan 2015 15:06:35 +1300, Michael Cree wrote:
A further complication is that the tzdata must be up to date for the C library to be able to convert from Unix time (a single integer for the number of seconds since the epoch) to a time zone
Which is why I really, really like software that refers to the standard copy of tzdata in /usr/share/zoneinfo, rather than maintaining its own copy.
Absolutely! I get annoyed with libical which has its own time zone data and for NZ does not have historical DST info...
Remember all the hassles with Windows a few years ago when both the US and NZ extended their daylight-saving periods?
Not just Windows, but Apple who did not issue an update for Mac OS X until some weeks after the NZ daylight saving change and recommended on their forum that NZers just adjust the system clock by one hour for the week or two that it displayed the wrong times, without warning that certain entries one put into the Calendar program (and elsewhere) would end up in the wrong hour when one corrected the clock back. In contrast Linux distributions had updates for tzdata well in time for the NZ DST change. Cheers Michael.