JQuery datepicker language
Maybe you don't have a language file:
Language files are here: https://github.com/jquery/jquery-ui/tree/master/ui/i18n
A new localization should be created in a separate JavaScript file named ui.datepicker-.js. Within a document.ready event it should add a new entry into the $.datepicker.regional array, indexed by the language code, with the following attributes:
http://api.jqueryui.com/datepicker/
This is for the dutch people.
$.datepicker.regional['nl'] = {clearText: 'Effacer', clearStatus: '',
closeText: 'sluiten', closeStatus: 'Onveranderd sluiten ',
prevText: '<vorige', prevStatus: 'Zie de vorige maand',
nextText: 'volgende>', nextStatus: 'Zie de volgende maand',
currentText: 'Huidige', currentStatus: 'Bekijk de huidige maand',
monthNames: ['januari','februari','maart','april','mei','juni',
'juli','augustus','september','oktober','november','december'],
monthNamesShort: ['jan','feb','mrt','apr','mei','jun',
'jul','aug','sep','okt','nov','dec'],
monthStatus: 'Bekijk een andere maand', yearStatus: 'Bekijk nog een jaar',
weekHeader: 'Sm', weekStatus: '',
dayNames: ['zondag','maandag','dinsdag','woensdag','donderdag','vrijdag','zaterdag'],
dayNamesShort: ['zo', 'ma','di','wo','do','vr','za'],
dayNamesMin: ['zo', 'ma','di','wo','do','vr','za'],
dayStatus: 'Gebruik DD als de eerste dag van de week', dateStatus: 'Kies DD, MM d',
dateFormat: 'dd/mm/yy', firstDay: 1,
initStatus: 'Kies een datum', isRTL: false};
$.datepicker.setDefaults($.datepicker.regional['nl']);