http://www.jevents.net/forum/viewtopic.php?f=17&t=7614

http://www.jevents.net/en/jevents-15-topmenu-17/119-custom-format-strings-in-the-latest-events-module

The following strings will give you time formatted in 24h format.

${eventDate}[!a: - ${endDate(%H:%M)}]
${title}