Fix wrong tests for Event
Fix wrong tests for Event

Wasn't setting some datetimes precisely and the tests were not really testing
what they were meant to.

m-narayan/agora-conf,m-narayan/agora-conf,m-narayan/agora-conf,m-narayan/agora-conf,m-narayan/agora-conf,m-narayan/agora-conf,m-narayan/agora-conf