Could you have a look at http://www.sheffieldrenewables.org.uk/events/ and click on April. You'll notice that entries that have a time, rather than all day events, down display the time. The time shows up fine in the week view.
Also is it possible to stop google calendar opening when you click on an event on the calendar (ie just show the time and title in the calendar with no links).
Other than that ... nice simple plugin.