My mom calling me. It happens every day - I'm in the middle of a dream and she calls me at like 3 pm telling me to do something and I always feel like I'd already been awake before she called, but then I realize the call is what woke me up. Sleep is weird.
Around 10.30 for no real reason. No alarm or anything but I couldn't find my phone. I found it and then I was too wired to sleep anymore. I was up until almost 5.