Which season is cited as providing a near-perfect practical sweet spot combining crisp air stability with comfortable temperatures in the Northern Hemisphere?

Answer

Late autumn (November)

Late autumn, especially November, is described as a useful practical sweet spot because it blends the stable air quality of winter with slightly less punishing cold, while nights are already long.

Which season is cited as providing a near-perfect practical sweet spot combining crisp air stability with comfortable temperatures in the Northern Hemisphere?

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Why night skies are better in winter than during summer - YouTube

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