Hi,

I corrected the file

.../components/com_events/language/portuguese.php

// Short day names
DEFINE("_CAL_LANG_SUNDAYSHORT", "D");
DEFINE("_CAL_LANG_MONDAYSHORT", "S");
DEFINE("_CAL_LANG_TUESDAYSHORT", "Q");
DEFINE("_CAL_LANG_WEDNESDAYSHORT", "Q");
DEFINE("_CAL_LANG_THURSDAYSHORT", "Q");
DEFINE("_CAL_LANG_FRIDAYSHORT", "S");
DEFINE("_CAL_LANG_SATURDAYSHORT", "D");

To

// Short day names corrected
DEFINE("_CAL_LANG_SUNDAYSHORT", "D");
DEFINE("_CAL_LANG_MONDAYSHORT", "S");
DEFINE("_CAL_LANG_TUESDAYSHORT", "T");
DEFINE("_CAL_LANG_WEDNESDAYSHORT", "Q");
DEFINE("_CAL_LANG_THURSDAYSHORT", "Q");
DEFINE("_CAL_LANG_FRIDAYSHORT", "S");
DEFINE("_CAL_LANG_SATURDAYSHORT", "S");

Cheers,

Sybele Groff