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Comment by nerdy | Hacker News Reader

Why not just write the name of a season on a corner for each of the 4 configurations and call it a day? The incorrect season on the same side would be written upside down. If the season is wrong, flip/rotate accordingly.

  ----------  ----------

  ɹǝɯɯnS----  ƃuıɹdS----

  ----------  ----------

  ----------  ----------

  ----Winter  ------Fall

  ----------  ----------

While not flip or rotate, it is a single operation: "Align the current season to the bottom"

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But if you are heaviest in the winter, every winter, it will result in uneven wear :)

I have seen almost exactly this on hotel mattresses. But it had three months in each spot instead of the season. "Jan/Feb/March" in one spot then "Apr/May/Jun" in the next, etc.

A bit different, but my first thought was to use even/odd and the date.

Odd Month / Quarter = flip head to end

Even Month / Quarter = flip side to side

That would be four states of the mattress per year, at the cost of remembering the rule.

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