Retrieve time of last optimize

[Shawn Heisey]

Is it possible to issue some kind of query to a Solr core that will 
return the last time the index was optimized?  Every day, one of my 
shards should get optimized, so I would like my monitoring system to 
tell me when the newest optimize date is more than 24 hours ago.  I 
could not find a way to get this.  The /admin/cores page has a lot of 
other useful information, but not that particular piece.

Thanks,
Shawn