The annual "Tribute in Light" light beams symbolizing the towers will return at sundown.

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Meant to resemble the ocean at sundown, the set could be worn to the most formal of black ties or the craziest of nightclubs.

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Religious eating habits are especially relevant this month with Muslims observing Ramadan and Jews about to undertake an approximately 24-hour fast on Yom Kippur, which begins at sundown on September 27.

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The eight-day Jewish holiday of Hannukah begins at sundown.

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The first time I stayed at the Palms, the concierges rarely answered the phone, it took 30 minutes to get a breakfast check, the power went out every evening at sundown and one night a staff member came into my room at 11 p.m.

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Because he stargazes for as long as eight hours at a time--from after sundown until sunup--he also has installed a space heater, a minifridge stocked with Diet Coke and a CD player that serenades him with Mozart string quartets.

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Both Muslims and Hindus, however, try to ensure that disposal of a body take place before sundown on the day of death, even if close relatives cannot attend the obsequies, or at the very latest at sunrise the next day if death occurs late in the afternoon.

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