NBCSN has the right to the actual telecast as part of "Wednesday Night Rivalry". Their pre-game starts at 6:30 and the game coverage begins at 7:30. Expect puck drop more in the 7:45 - 7:50 range (and I would not expect there to be a sun glare delay). NHL Live starts their coverage at 6:30.
NBCSN is also airing "NHL Rivals: Islanders/Rangers" three times this week. It premieres at approximately 10:30 pm tonight (after Washington/Buffalo and post-game coverage). Re-airs at 12:30am Thursday (I should be thawed out by then) and at 7:00am Thursday.
There will be 1 hour of post-game coverage on MSG Network after the game at (approximately) 10pm; it will re-air multiple times on MSG and MSG+ overnight and into Thursday.
Chris King's radio broadcast is on the usual outlets WRHU and WRCN but will also be heard on WCBS-880 so if you're anywhere on the East Coast you should be able to hear it. Coverage begins at 7:30.
Ranger radio coverage on ESPN 98.7 begins at 7:00.
Forever1940 is the nom de plume of Eric Hornick, statistician on Islander home telecasts since January 21, 1982. Visit my blog: NYISkinny.com and follow me on Twitter @ehornick