The NHL announced that Game 1 of their Atlantic Division final will take place on Thursday at TD Garden in Boston. Game time is listed as 7:30 ET and will be shown on NBCSN in the States, CBC and RDS in Canada.
The rest of the schedule is yet to be determined, though you can probably expect Game 2 to be on Saturday.
All the other second-round series are waiting for the matchups to be set before their schedules can be made. The three Game 7s on Wednesday night will determine the final three slots in the next round.