diff --git a/lang/it/moodle.php b/lang/it/moodle.php
index 80a7e755765..ce993006de2 100644
--- a/lang/it/moodle.php
+++ b/lang/it/moodle.php
@@ -555,11 +555,11 @@ $string['state'] = "Stato/Provincia";
 $string['status'] = "Status";
 $string['strftimedate'] = "%%d %%B %%Y";
 $string['strftimedateshort'] = "%%d %%B";
-$string['strftimedatetime'] = "%%d %%B %%Y, %%I:%%M %%p";
+$string['strftimedatetime'] = "%%d %%B %%Y, %%H:%%M";
 $string['strftimedaydate'] = "%%A, %%d %%B %%Y";
-$string['strftimedaydatetime'] = "%%A, %%d %%B %%Y, %%I:%%M %%p";
+$string['strftimedaydatetime'] = "%%A, %%d %%B %%Y, %%H:%%M";
 $string['strftimerecent'] = "%%d %%b, %%H:%%M";
-$string['strftimerecentfull'] = "%%a, %%d %%b %%Y, %%I:%%M %%p";
+$string['strftimerecentfull'] = "%%a, %%d %%b %%Y, %%H:%%M";
 $string['strftimetime'] = "%%I:%%M %%p";
 $string['stringsnotset'] = "Le seguenti stringhe non sono definite in \$a";
 $string['studentnotallowed'] = "Spiacenti, ma non puoi accedere a questo corso come '\$a' ";
diff --git a/lang/pl/moodle.php b/lang/pl/moodle.php
index 03af96131e2..a8f178c40a0 100755
--- a/lang/pl/moodle.php
+++ b/lang/pl/moodle.php
@@ -223,7 +223,7 @@ $string['leavetokeep'] = "Pozostaw puste aby zachowa
 $string['license'] = "Licenicja GPL";
 $string['listofallpeople'] = "Lista wszystkich osуb";
 $string['livelogs'] = "Bieї±ce logi z ostatniej godziny";
-$string['locale'] = "pl";
+$string['locale'] = "pl_PL";
 $string['location'] = "Poіoїenie";
 $string['loggedinas'] = "Jeste¶ zalogowany(a) jako \$a ";
 $string['loggedinnot'] = "Nie jeste¶ zalogowany(a)";
diff --git a/lang/pt/moodle.php b/lang/pt/moodle.php
index 9066a70821c..e1ef42bbedd 100644
--- a/lang/pt/moodle.php
+++ b/lang/pt/moodle.php
@@ -464,6 +464,14 @@ $string['someerrorswerefound'] = "Alguma informa
 $string['startdate'] = "Data de inicio do curso";
 $string['startsignup'] = "Criar uma conta de utilizador!";
 $string['status'] = "Regime";
+$string['strftimedate'] = "%%d %%B %%Y";
+$string['strftimedateshort'] = "%%d %%B";
+$string['strftimedatetime'] = "%%d %%B %%Y, %%H:%%M";
+$string['strftimedaydate'] = "%%A, %%d %%B %%Y";
+$string['strftimedaydatetime'] = "%%A, %%d %%B %%Y, %%H:%%M";
+$string['strftimerecent'] = "%%d %%b, %%H:%%M";
+$string['strftimerecentfull'] = "%%a, %%d %%b %%Y, %%H:%%M";
+$string['strftimetime'] = "%%I:%%M %%p";
 $string['stringsnotset'] = "As variбveis seguintes nгo estгo definidas em \$a";
 $string['studentnotallowed'] = "Desculpe, mas nгo se pode inscrever neste curso como '\$a'";
 $string['success'] = "Sucesso";
diff --git a/lang/ru/moodle.php b/lang/ru/moodle.php
index 17a4ebe3657..2d226aa2567 100644
--- a/lang/ru/moodle.php
+++ b/lang/ru/moodle.php
@@ -218,7 +218,7 @@ $string['leavetokeep'] = "
 $string['license'] = "Лицензия GPL";
 $string['listofallpeople'] = "Список участников проекта";
 $string['livelogs'] = "Логи за последний час";
-$string['locale'] = "рус.";
+$string['locale'] = "ru_RU";
 $string['location'] = "Размещение";
 $string['loggedinas'] = "Вы зашли под именем \$a ";
 $string['loggedinnot'] = "Вы не прошли идентификацию";