Plugin doesn't show month, only days and years

Hi there,

I have WP 3.6.1 on two servers – one free hosting, one my own server.

There is the same theme on both of them.

On site shows me normal schedule, and one shows me only day and month.

There is screenshot of that problem.

http://i.imgur.com/m0QCPDA.png

http://wordpress.org/plugins/event-list/