According to Hadoken.net and Joystiq the first episode of the new Web Series Mortal Kombat will air via Machinima at 4pm PST (that means 7pm EST).
Make sure to check in with Machinima before hand because actors and Director Kevin Tancharoen will be playing the new Mortal Kombat game (which releases April 19th) during the live stream before the debut of episode one of nine.