v66dik

Thanks for help!

So basically I did what Chris suggested. I downloaded my language files from http://translate.ww.wp.xz.cn/projects/wp/3.5.x and used filter to get only translations related to date and time. I put them to wp-content/languages/ folder and changed WP_LANG in config.php.

Probably not the best solution, but I got what I wanted.

Anyway,
Thanks