hash_string_pointer init_timezone_hashtable meos_finalize_timezone meos_initialize_timezone pg_open_tzfile pg_TZDIR pg_tzset pg_tzset_offset ReadDir scan_directory_ci select_default_timezone session_timezone SH_DECLARE SH_DEFINE SH_DESTROY SH_ELEMENT_TYPE SH_EQUAL SH_HASH_KEY SH_KEY SH_KEY_TYPE SH_PREFIX SH_RAW_ALLOCATOR SH_SCOPE timezone_cache TZCACHE_INITIAL_SIZE tzcache_my_destroy

pg_tzset_offset() pg_tz * pg_tzset_offset ( long  gmtoffset )