This one seems very different from the first 3.
The first one her water broke on the first contraction. 4.5 hours later we were holding Thing 1 (and a coupke hours after that she peed on me). The second time she some false labor in the early afternoon. We went in, labor stopped, we got dinner, went for a walk, then got sent home. A couple hours later real labor hit like freight train. 55 minutes later (and 7 minutes before we got back to the birth center) Thing 2 was born. Third round her water broke with a sneeze while her mom was cooking dinner. Hour and a half later labor started, and 2 hours and 2 minutes after labor started Thing 3 was crying.