Looks like Sprint likes Sunday releases.
I found this in the reply section of a story out there somewhere.
I did not do this research, but I checked several of them and they do match:
"The Kyocera Echo was released Sunday, April 17, 2011.
The Nexus S 4G was released Sunday, May 8, 2011.
The Samsung Replenish was released Sunday, May 8, 2011.
The Motorola XPRT was released on Sunday, June 5, 2011.
The Motorola Titanium was released Sunday, July 24, 2011.
The Motorola Photon 4G was released on Sunday, July 31, 2011.
The Samsung Conquer 4G was released on Sunday, August 21, 2011.
The LG Marquee was released Sunday, October 2, 2011.
The EVO Design 4G was released on Sunday, October 23, 2011.
The Samsung Transform Ultra was released on Sunday, November 13, 2011.
The ZTE Fury was released Sunday, March 11, 2012.
The EVO 3D, Epic 4G Touch, Motorola Admiral and iPhone 4S were the only phones Sprint released on a Friday last year."
Interesting.
Mav.