As Alter points out, the word âimplies victory and dominance.â The âtrump cardâ in bridge and other card games is a card of a suit that temporarily ranks above any other and is derived from âtriumph,â a name for an early card game.
Astronomical Twilight, Dawn, and Dusk. Astronomical twilight occurs when the Sun is between 12 degrees and 18 degrees below the horizon. Astronomical dawn is the time when the geometric center of the Sun is at 18 degrees below the horizon. Before this time, the sky is absolutely dark.
During astronomical twilight the center of the sun is between 12 and 18 degrees below the horizon. Between the end of astronomical twilight in the evening and the beginning of astronomical twilight in the morning, the sky is dark enough for all astronomical observations.9:23 7:23 PM. During civil twilight the geometric center of the sun is between 0 and 6 degrees below the horizon. Objects are clearly distinguished without artificial light. During nautical twilight the center of the sun is between 6 and 12 degrees below the horizon.