When editing an existing event from a Team Calendar, the Time is not formatted properly, which if the user doesn't change it manually, will throw an error that the Time is not long enough.

2014-05-19 12:50:31,214 WARN [http-bio-8525-exec-91] [extra.calendar3.rest.CalendarResource] tryParseDateTimeStringForEventEdit Unable to parse date May 20, 2014 time 9:00
– url: /confluence/rest/calendar-services/1.0/calendar/events.json | userName: req85518 | referer: https://confluence.mutualofomaha.com/confluence/calendar/mycalendar.action
java.lang.IllegalArgumentException: Invalid format: "9:00" is too short

In some testing, this only happens when the Users language setting is set to English (US).

Screenshots are attached.