Thanks for the information. From the wording in the new decree, it appears that Chile will change its practice this year for Easter Island Time (Hora Oficial de Chile Insular Occidental), as described below. I wonder: is this correct? In 2008, as documented in <https://web.archive.org/web/20090701000801/http://www.shoa.cl/noticias/2008/...>, Chile kept Easter Island Time two hours behind mainland time: when the mainland switched at 24:00 local time, Easter Island switched at 22:00 local time. This is the practice in the European Union. In contrast, this week's decree says that mainland and Easter Island both switch at 24:00 local time, which means the mainland will switch two hours before Easter Island does. This is the practice in North America. Has the practice really changed in Chile, and if so, do you know which year the new practice was introduced? I don't speak Spanish natively and so could be misreading the decree; comments are welcome. In the meantime a, proposed further patch to tzdata is attached and is installed in the experimental tzdata version on GitHub <https://github.com/eggert/tz>; this patch assumes that the new Chilean practice is being introduced this year.