In Hebraic thought, evening twilight is understood as a transitional period between day and night. It is currently understood that it is evening twilight as long as two stars of medium magnitude are visible, but it is night upon the appearance of a third star of medium magnitude. In ancient times, some understood that night begins in a moment in time which is impossible to determine called the twinkling of an eye. This is interesting, as Paul prophesied that the righteous would be resurrected in the twinkling of an eye.
Civil twilight
Nautical twilight is when the center of the sun is between 6° and 12° below the horizon where navigation via the horizon at sea is not possible.
Nautical twilight
Astronomical twilight is when the center of the sun is between 12° and 18° below the horizon where the sky is dark enough for astronomical observations. Morning civil twilight begins when the center of the sun is 6° below the horizon and ends at sunrise.
Astronomical twilight
Paul's use of the phrase the twinkling of an eye aligns perfectly with the ancient understanding. The exact moment night begins therefore remains a little mysterious in Hebraic thought. In contrast, the modern world subdivides evening twilight into three definitive subcategories. Evening civil twilight begins at sunset and ends when the center of the sun is 6° below the horizon.1 Corinthians 15:51-52 Behold, I tell you a secret; We will not all sleep, but we will all be changed. In a moment, in the twinkling of an eye, at the last trumpet, for it shall sound, and the dead shall be raised incorruptible, and we shall be changed.
Civil twilight
Nautical twilight is when the center of the sun is between 6° and 12° below the horizon where navigation via the horizon at sea is not possible.
Nautical twilight
Astronomical twilight is when the center of the sun is between 12° and 18° below the horizon where the sky is dark enough for astronomical observations. Morning civil twilight begins when the center of the sun is 6° below the horizon and ends at sunrise.
Astronomical twilight
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