dawn

A Dictionary of Aviation · 1911 · p. 8
de:n n. the first appearance of daylight in the morning; daybreak. false dawn, a transient light,; resembling dawn, but appearrng about an hour before actual daybreak. day dee x. 4..the time of sunlight; the interval between the rising and setting of the sun. break of day, the bursting forth or first appearance of light rn the morning; the dawn; daybreak. clear day, a day 1n which the sky is clear. see clear sky, under sky. dark day, any day in which the sunlight is dim or absent, or the atmosfere foggy or smoky, due to prairie or ferest fires, volcanic eruptions, etc. high day, the time when the sun 1s rn the meridian; high noon. 2. the time eceupied by the earth in making one complete turn on its axis; the space of twenty-four consecutiv hours. apparent solar day, the day or interval of time between. two succe tv meridian transits of the sun. change of day, a change of one’s reckoning in circumnavigating the globe, when, by the calendar, a day is lest or gaind. gained day, the calendar day which is gaind or reckond twice at the date-line in circumnavigating the globe from west to east. lost day, the calendar day which is lest or drept out at the date cline, in circumnavigating the globe from east to west. sidereal day, the interval between two succe iv transits of a given star.
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