I'm not sure if sunlight blocks sleep completely, because it's also correlated with warmth which does help with sleeping. It's probably more to do with circadian rhythm.
For two years in college, my bed and window were positioned just so, that sunlight would target my pillow at around 10-11 am, and I found I consistently woke up around then in the absence of an alarm, independent of how long I slept (within reason.) These days I still seem to have a harder time waking up if it's overcast rather than sunny. But to answer your question, I can't recall any instances when I fell asleep in the sun; I might even have a habit of closing the blinds to sleep, if it's still light out.
This is the public group instrumental rationality diary for Christmas week. It's a place to record and chat about it if you have done, or are actively doing, things like:
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.
Thanks to everyone who contributes, and I hope everyone is having a nice holiday!
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