```{index} single: tzname; POSIX function ``` ```{index} single: POSIX::tzname; Perl function ``` # tzname Short names of the current standard and daylight timezones. ## Synopsis ```perl use POSIX qw(tzname); my ($std, $dst) = tzname(); ``` ## What you get back A two-element list. Both strings are derived from `TZ` — the call also implicitly refreshes the timezone cache. ## Differences from upstream Fully compatible with upstream POSIX.