Michael and Michael Issues

Note the following excerpts from my previous post:

• Michael Showalter (born June 17, 1970) 
• Conrado Walter, S.A.C. (19 June 1923 – 20 September 2018) 

And now note the following information on another cast/crew of the show, Michael and Michael have Issues:

• Josh Pais (born June 21, 1964) 

And so we now have a “June 7, ..., 13, __, 17, 19, 21/ Uneven Day, Date Sequence” pattern-cluster. I included June 7th— Trish MacGregor’s Birthday and my birthday— June 13.  Anyone up for bridging the June 15 gap?!