This question was discussed in a few previous threads:
http://www.lcficmbs.com/ubb/ultimatebb.php?ubb=get_topic;f=9;t=000750#000000
http://www.lcficmbs.com/ubb/ultimatebb.php?ubb=get_topic;f=9;t=000191#000002
and
http://www.lcficmbs.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=012290#000003
The last thread started life as FDK for a story of mine (the very first L&C story that I ever wrote -- almost the first story of any kind that I ever wrote), but includes a discussion by several authors of Clark's birthday.
Perhaps you'll find something useful in one of the threads.
Joy,
Lynn
