{
    local $ENV{TZ} = "Singapore";
    print scalar localtime;
}

##</code><code>##

{
    # Strangely enough I must use GMT-8 on my linux, even
    # though the official timezone name is GMT+8 (or UTC+8)
    local $ENV{TZ} = "GMT-8";
    print scalar localtime;
}

##</code><code>##

print scalar gmtime(8*3600+time);