Assuming systemv is required, the following result was found.
Pacific/Tarawa Pacific/Tongatapu Pacific/Truk Pacific/Wake Pacific/Wallis Pacific/Yap Poland Portugal ROK Singapore SystemV/AST4 SystemV/AST4ADT SystemV/CST6 SystemV/CST6CDT SystemV/EST5 SystemV/EST5EDT SystemV/HST10 SystemV/MST7 SystemV/MST7MDT...