I created a Perl script reading information from an XLSX sheet. Since on one machine it worked well, and on another it did not, I included a short debug section:

```
$sheetdate = ($sheet -> {Cells} [0] [$sheet->{MaxCol}]) -> value();
print "value: $sheetdate\n";
$sheetdate = ($sheet -> {Cells} [0] [$sheet->{MaxCol}]) -> get_format();
print "getformat: $sheetdate\n";

```

On one machine it printed:

```
value: 2016-01-18
getformat: yyyy-mm-dd

```

While on the other:

```
value: 1-18-16
getformat: m-d-yy

```

Same script, same worksheet, different results. I believe that something in the environment makes the difference, but I do not know what exactly.

Any hints?