We have two girls:
- Elise, who is 2 and is decidedly an evening person: running and bouncing and laughing and playing until 7 or 8 PM if she can get away with it (which she can't, we want her in bed by 7-7:30 which causes moderate amounts of crying on a daily basis), and she'll gladly sleep until a quarter past 7 AM unless she's awakened by her sister
- Inara, who is 5½ and just as decidedly a morning person: no matter how exhausting the day, or how late to bed, she's up again at 5:30 at the very latest, most days at 5 AM. And this is at any time of year, and always with effective black-out curtains.
We have (and have had for years) a lamp on a timer that goes on at 6:30 AM to let her know that it's time to get up, and we have instructed her repeatedly to stay in bed (or at least play quietly in her room) until that lamp goes on. Sometimes, she comes to us at 4 in the morning to let us know that "the lamp doesn't work", and every time we've told her that it works just fine, it's her that's up too early. An adorable story, but not so fun really. This has become worse to the point where she will frequently just ignore the lamp and gets out of bed to play from 5 AM, most such days coming to us for entertainment or at least she will wake us up (we are both light sleepers in a not very sound-proof home).
What can we do to make this delightful morning person respect the rhythms of the rest of the family? We realize that you can't force someone to stay asleep, and that it won't work to just keep her up for longer (she'd still get up early, but then crash shortly after noon). Of course, very soon they'll both have to get up at 6:30 so we can get big sis to school by 8.
Edit for clarification: She does have an analogue wall clock (with a sweeping second hand) that we have annotated with coloured markings to show different periods of interest, and she understands that. With the aid of an always-on red night light, the clock is readable throughout the night, so she can "tell time" well enough at any given moment.