astronomy, meteor shower, birding, stargazers, lunar eclipse, planetarium, moonlight, telescopes, camping, owling, constellations, moonrise, summer solstice, moonlit, aurora borealis, nighttime, starlit, naturalists, perseids, wine tasting, snowshoeing, astrophotography, snorkeling, campout, celestial, evenings, birdwatch, aurora, sightseeing, gazing, geocaching, solstice, alpenglow, picnicking, sunrises, excursions, epsilon aurigae, wildflower, outdoors, kayaking, rockhound, observatory, candlelit, starlight, campfire, hiking, sleepover, sun, frogging, canoeing, moonless, viewing, binoculars, hummingbird moth, rocketry, astronomers, horseback riding, wiener roast, earthshine, nights, nebulas, vernal, grunion, sunbathing, nocturnal, vesper, spelunking, sky, bushwalking, sunset, scuba diving, midsummer eve, dusk, starry, canis major, moon, backpacking, equinox, celestial navigation, occulted, taurid, midwinter, suntanning, hayride, cloudiest, zodiacal light, overnighter, brunches, sighting, hubble, fireflies, firelight, solar eclipse, meteor, getaways, omega centauri, birder, occultation, canis minor, woodcocks, birdwatchers, paranormal, tinkering, accident, arson, browsing, burglary, chance, chat, consequence, conviviality, cottagers, crunching, debility, diversion, doctoring, ducking, earnest, entertainments, gardening, hacking, hobby

observance, observation, watching