If it just says NBC--then that means that the game will be on the main over the air network channel--channel 4 NBC in the NYC area. The other 3 games are on the cable channel formerly known as Versus and now known as NBC Sports Network.
Holy crap! A network-TV quadruple-header?! I better buy my wife something nice that day, 'cuz she's not see gonna much of me... ------RM
I noticed on the NBCSN schedule from the 4/27 thru 6/2. All their MLS games are afternoon games. Smart move on their part because they actually planned for the NHL playoffs. Which means no moved game times. The only one that might possibly have to me moved to an earlier time might be the 6/23 game of Colorado/Portland. Depends on where the Stanley Cup Finals is in terms of games. Games 3 and 4 are broadcast on NBCSN.
Apparently not league games, but there are other competitions (USOC and CCL) and club friendlies that can/will use those days of the week (though maybe not Mondays at all) from time to time in 2013.