I'm offering add function which will get months' and days' names (and their acronym) from lang files. Because locale often include words in incorrect form.

For example in russian:

We speak 2'nd of September as [vtoroe sentiabria] but just [sentiabr] if we mean name of month. But in locale %B correspond to [sentiabria] and it looks not well.

It will necessary to add monthes and acronyms to calendar.php

function strftime_ex($format, $date, $fixday = true) {

global $CFG;

static $strftimedaydatetime;

if ($format == '') {

if (empty($strftimedaydatetime))

{ $strftimedaydatetime = get_string('strftimedaydatetime'); }

$format = $strftimedaydatetime;

}

/// correcting dates (dlnsk) %%62%%

$str = get_string(strtolower(date('F', $date)), 'calendar'); // January

$format = str_replace('%B', $str, $format);

$str = get_string(strtolower(date('l', $date)), 'calendar'); // Monday

$format = str_replace('%A', $str, $format);

$str = get_string(strtolower(date('M', $date)), 'calendar'); // Jan

$format = str_replace('%b', $str, $format);

$str = get_string(strtolower(date('D', $date)), 'calendar'); // Mon

$format = str_replace('%a', $str, $format);

if (!empty($CFG->nofixday))

{ // Config.php can force %d not to be fixed. $fixday = false; }

else if ($fixday)

{ $formatnoday = str_replace('%d', 'DD', $format); $fixday = ($formatnoday != $format); }

if ($fixday)

{ $datestring = strftime($formatnoday, $date); $daystring = str_replace(' 0', '', strftime(' %d', $date)); $datestring = str_replace('DD', $daystring, $datestring); }

else

{ $datestring = strftime($format, $date); }

return $datestring;

}