events are not shown

http://dide-v.thess.sch.gr/plinet/calendar/

I have an event on 15 of Oct 2014. It is not shown. What am I doing wrong?

The message I get is:
“There are no upcoming events to display at this time. “

This event is shown in page “All events” and it can be modified, but it is not shown -even when I am in its pae and click on its “View event”.
Its url is: http://dide-v.thess.sch.gr/plinet/ai1ec_event/15102014/.

I have the last version of event-calendar.

Thanks,
Tania

https://ww.wp.xz.cn/plugins/all-in-one-event-calendar/