Versus, the former OLN, is actually covering the event this year. The full TV schedule can be seen here. Today’s prologue looks to be an hour off from the start (5pm EST).

Prologue
Sunday, February 18th 2pm-4pm PST (5pm-7pm EST)

Stage 1
Monday, February 19th 8pm-9pm PST (11pm-12am EST)

Stage 2
Tuesday, February 20th 8pm-9pm PST (11pm-12am EST)

Stage 3
Wednesday, February 21st 8pm-9pm PST (11pm-12am EST)

Stage 4
Thursday, February 22nd 8pm-9pm PST (11pm-12am EST)

Stage 5
Friday, February 23rd 8pm-9pm PST (11pm-12am EST)

Stage 6
Saturday, February 24th 8pm-9pm PST (11pm-12am EST)

Stage 7
Sunday, February 25th 2pm-4pm PST (5pm-7pm EST)

If all else fails, you may be able to catch it on Cycling.TV. One of my local bike shops subscribes to this service to check out all the races that the American TV companies don’t bother broadcasting.