الشفق البحري
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<timefyi-glossary slug="nautical-twilight"></timefyi-glossary>التعريف
فترة يكون فيها مركز الشمس بين 6 و12 درجة تحت الأفق، إذ يمكن للبحارة رؤية خط الأفق واستخدام النجوم للملاحة.