Hi a found some interesting information to complete translate event_calendar to spanish, some transtations are availabe in language folder in es.php file, but what about calendar transtation like Months (Enero, Febrero..) Prev and next (siguiente, anterior)

I foun this information in: <!--[if gte mso 9]> Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 <![endif]--><!--[if gte mso 9]> <![endif]--><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:1; mso-generic-font-family:roman; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:0 0 0 0 0 0;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --><!--[if gte mso 10]> <! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} -->

<!--[endif]-->mod/event_calendar/ui.datepicker.packed.js

We have to change the last lines to the correspond texts.

atepicker|_changeDatepicker|instance|transparent|color|background|prepend|relative
|_disableDatepicker|_enableDatepicker|removeData|_destroyDatepicker|150|pageY|pageX|
_dialogDatepicker|_inlineShow|click|eval|getAttribute|setDefaults|console|hasDatepicker|
normal|first|as|Set|Sab|Vier|Jue|Mie|Mar|Lun|Do|Sab|Vier|Jue|Mie|Mar|Lun|Sun|

Saturday|Friday|

Thursay|Wednesday|Tuesday|Monday|Sunday|of|Week|Wk|Dec|Nov|Oct|Sep

|Aug|Jul|Jun|Apr|Mar|Feb|Ene|Deciembre|Noviembre|Octubre|Septiembre|Agosto

|Julio|Junio|Abril|Marzo|Febrero|Enero|Today|Next|Prev|without|Erase|Clear|dialog'.split('|'),0,{}))

I found this information usefull.

Eddy