dark, night, nighttime

forenoon, morn, morning, morning time

sunlight, dusk, sunrise, nighttime, darkness, sun, moonless, daylight savings, moonlight, sunshine, sunset, daylight saving, moonrise, twilight, sundown, dawn, clerestories, lights, summer solstice, outdoors, moonset, nightfall, sunrays, shadows, illumination, daybreak, owling, evenings, glow, lunar eclipse, glary, brightness, autumnal equinox, hours, diurnal, daytime, indoors, floodlights, perseids, alpenglow, hibernation, shade, midnight, neap tide, gloaming, moonlit, dimness, zodiacal light, occultation, overcast, mugginess, umbral, sunup, afternoons, skies, earthshine, sleep, underwings, bankside, foraging, vernal equinox, winter solstice, aurora, viewfinder, mornings, workday, headlights, predawn, clocks, solstice, window, lull, woodcocks, sunbeams, photoperiod, dapples, phosphorescence, stargazing, stillness, circadian rhythm, peripheral vision, foliage, wintertime, grayness, blue sky, rays, starlight, workweek, aurora borealis, cloudy, larks, solar eclipse, noonday, sulphurs, equinoxes, roaring forties, gaslights, celestial equator, skylights, rush hour, hoarfrost, time, light, springtime, dazzle, rain, shine, dawning, firelight, spring, silhouette, stroboscopic, 1950s, lapse, stereoscopic, actual, altitude, anamorphic, cinematographic, continous, continuous, expressionistic, panoramic, sight, appreciable, bleakest, clock, color, colour, down

afternoon, eve, evening, eventide, midafternoon

blue, blue air, blue sky, crookes radiometer, daylight-savings time, daylight-saving time, daylight saving, daylight savings, daylight vision, day game, doolittle, eve, evening, eventide, fanlight, iodopsin, james harold doolittle, jimmy doolittle, john tyndall, morning room, photopic vision, skylight, sundial, tyndall, white-out, wild blue yonder

day, mean solar day, solar day, twenty-four hours

amount of time, period, period of time, time period, visible light, visible radiation