We made a quick update to Tempo today, will make this brief:
You can download the updated Dashboard Widget for Mac OS X here.
The timer-sessions field presents the start and stop times one after the other, semi-colon delimited. It looks like this:
<command>posting about new changes @blogging</command>
<timer-sessions>11:16 AM - 11:16 AM; 03:56 PM - 03:57 PM</timer-sessions>