There are 3 this cycle:

1. IP takes you and other pilot down to an MD-88 sim, and the two of you spend 2-hours on hold with Crew Tracking trying to figure out what the heck happened.

2. During cockpit preflight, Dispatch sends ACARS that flight is cancelled and you have to sleep in crew lounge.

3. "A" period: First half is normal flight from JFK-BOS with 5 MELs. During the break you get re-routed to DTW, but not until the "D" period.