Carbon does not handle (int)1388611200 for creating new Carbon about carbon

[briannesbitt]

Pulled right from the readme:

The final two create functions are for working with unix timestamps. The first will create a Carbon instance equal to the given timestamp and will set the timezone as well or default it to the current timezone. The second, createFromTimestampUTC(), is different in that the timezone will remain UTC (GMT). The second acts the same as Carbon::createFromFormat('@'.$timestamp) but I have just made it a little more explicit. Negative timestamps are also allowed.

echo Carbon::createFromTimeStamp(-1)->toDateTimeString();                        // 1969-12-31 18:59:59
echo Carbon::createFromTimeStamp(-1, 'Europe/London')->toDateTimeString();       // 1970-01-01 00:59:59
echo Carbon::createFromTimeStampUTC(-1)->toDateTimeString();                     // 1969-12-31 23:59:59