Last Updated
：2025/11/24
nautical twilight
Noun
uncountable
Japanese Meaning
太陽が地平線下6°から12°に位置する、朝と夕方の薄明かり（航海での視認基準として利用される）時間帯。
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The period in which the sun is 6°–12° below the horizon in the morning and evening.
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nautical twilight
We set sail during nautical twilight to take advantage of the fading stars while still having enough light to navigate.
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We set sail during nautical twilight to take advantage of the fading stars while still having enough light to navigate.
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