For me, both of my pregnancies I went into labor in the early morning. About 7am both times. Which, incidentally is when I almost always start my period--first thing in the morning. So, you can imagine when I expect I will go into labor this time!
my water was leaking all day, probably starting around 11am or so? but i was in major denial about it, since i was only 35 weeks. continued to leak throughout the day and evening, contractions finally started about 11pm, 3 hours after my water started gushing. i was in active labour by 1 or 2 am, born at 9:21 am.