Harvest Moon: A Wonderful Life Special Edition

Starting in Chapter 2, the residential section of Forget-Me-Not Valley will modify slightly. Galen and Nina no longer live next to Hugh, Wally, and Chris; sadly, Nina passes away, and in his grief, Galen is moved to the hill near Vesta's farm (since there is some relation there). Left in the residential section is, from left to right: Hugh and Chris's house, Grant and Samantha's house, and Hardy's house. Hardy takes Galen's old house and runs it as a bit of a clinic, though he still goes out to keep a check on Galen and Romana from time to time. The house you're wanting is Grant and Samantha's, entered possibly around 5 am. Upon entering, Grant himself will greet you and offer you to use his old alarm clock. He'll take you back to your house and install it for you.

At the diary where you choose to sleep, a new option will appear labelled Alarm. From here, use to rotate the clock as to when you'll be awakened and to turn it off or on. Due to the nature of sleeping, you're not allowed to change the clock's alarm to wake you up at PM, but I doubt you'd truly need that. For the condition of this trophy, turn the alarm on and be awakened by it for your following day.