certainly I do, The interesting thing about this idea is that it's not about sleep so much as planning. I only know about it because I heard the alarm and asked what it was. If you do try it; do update LW about it.
I do something like that. I have to. I know from long experience that I need 6 solid hours of sleep. Add padding at the beginning for actually falling asleep of 30 minutes (I have worked hard on getting that down but 30min about is it). I know when my children will wake me up the next morning and/or when I will have to get up the latest to get them to school/kindergarten (and there is no-one I can fall back to to do it). So on most days I know when I will have to go to bed the latest. At best I can squeeze out an extra 10mins in the morning. And the latest...
This is the public group rationality diary for December 1-13, 2015. It's a place to record and chat about it if you have done, or are actively doing, things like:
Established a useful new habit
Obtained new evidence that made you change your mind about some belief
Decided to behave in a different way in some set of situations
Optimized some part of a common routine or cached behavior
Consciously changed your emotions or affect with respect to something
Consciously pursued new valuable information about something that could make a big difference in your life
Learned something new about your beliefs, behavior, or life that surprised you
Tried doing any of the above and failed
Or anything else interesting which you want to share, so that other people can think about it, and perhaps be inspired to take action themselves. Try to include enough details so that everyone can use each other's experiences to learn about what tends to work out, and what doesn't tend to work out.