Okay here is a trip for you. I had a 0930 SC. I get a 4-day signing in at 1345, I accept it at 0830. First day 3 legs, DTW turn and then DTW overnight. The plane is later and then we find out that the position light is out during the walk around. Maintenance replaces the bulbs, no luck, then after a while they replace the housing, no luck. They can't trace the issue, the plane is removed. Now we find another plane. As I go to preflight it, its after 11pm, the gate agent informs me that we, the pilots, are about to time out. Turns out they're right, duh, we're due to land at 0130, that'd be 16.5 hours since I started SC at 0930.

So they find a SLC FO who was on his way to an ATL overnight and have him fly it and me DH. Worked out for him, he was done in DTW and got to commute home a day early.

But I was not released to the 1345 show and my time started at 0930 with my SC.