It is a rare occurrence - just one minute long - that no one now alive has ever experienced or likely ever will again. The last time it occured was 1111 - and we won't see it again until 2112 - after that, there won't be another again. At two minutes past eight tonight, the calendar will achieve a triple palindrome, when the time - on a 24 hour clock - and date synchronize to read the same backward as they do forward: 20:02, 02/20,2002