At Eagle we have 3 shifts per day of ready reserve. They vary by base, but are generally:

0530-1330
1100-1900
1400-2200

Ready Reserve lines are 75hr guarantee, have 11 days off per month, and you sit Ready Reserve for 4-5 days at a time for the whole month. If the ready reserve lineholder is sent out on a trip they call in a regular reserve pilot to sit for an 8-hour shift.

I think this is one of the weakest parts of the Eagle contract, sometimes we have multiple Ready Reserve pilots sitting at the airport on overlapping 8hr shifts.