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But a timezone system with a fixed dawn isn't even being proposed so that doesn't seem to be one of the options you mentioned as being preferred. That does sound nice but that doesn't seem like anything similar to any of the things being mentioned or suggested.

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Of course not, but that's what DST is intended to approximate. It just does a bad job of it due to insufficient granularity. If we did a twelve minute clock shift, with ten evenly-spaced switch days, the jet lag would be a lot less bad.

Since that would also require a lot more work, it doesn't happen, but it's also more obvious what DST is actually doing when you think of it like that.

So is it designed to approximate a fixed dawn or a fixed noon? It sounds like you're contracting yourself unless I'm missing something.

Standard Time approximates a fixed noon. DST is a poorly-done jury-rig to make it track dawn instead.

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