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Dayah Dover

5 posts.

May 30, 2026Circadia

What Is Non-24-Hour Sleep-Wake Disorder?

A plain-language guide to Non-24-Hour Sleep-Wake Disorder (N24): what it is, what "free-running" means, why sighted people get it too, how it's diagnosed and managed, and why several of its stranger features — marathon wake periods, sleep debt that won't clear, a sleep window that slams shut — are completely normal for the disorder.

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May 27, 2026Circadia

Two τ Changes Today, and the Bug I Caught On My Own Data

Why your τ tile might look a little different from this morning — and why the change is mostly the math finally admitting it can't fit a 30-hour cycle onto a 24-hour clock face.

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May 26, 2026Circadia

One Number Is Never the Whole Story

Why Circadia lets you change the math behind your sleep — and why my own settings look nothing like the defaults. Featuring a very bad Airbnb, a fourteen-hour lurch, and the embarrassing number of hours I do not spend asleep.

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May 25, 2026Circadia

Why I'm Asking You to Tap One More Button

I went down a rabbit hole this week about how to share your data with actual researchers without doing something stupid. Here's what I learned, what I built because of it, and a small ask at the end.

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May 15, 2026Circadia

Two Days of Circadia Open Alpha

None of the apps I tried even let me manually enter my sleep data, let alone predict my next bedtime or track my drift. So I built one. Two days into open alpha, here's what's been built, what's coming, and a real ask.

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