Nor, he might add, is crime a solely dusk-to-dawn affair.
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The BBC's Abdullahi Kaura Abubakar in Kano says the Sunday evening attack on a police station in the Naibawa district, on the outskirts of Kano, happened just before the start of the dusk-to-dawn curfew.
Standing on Fermor's terrace, with its fragments of classical sculpture and its vertiginous view of a turquoise cove of stones, I felt as if the inhabitants of 40 years ago had momentarily gone inside for a siesta and would soon be out for a dusk-lit gin and tonic.
This is especially useful in low-light situations like party shots, indoors or dusk where built-in flashes have historically struggled to reach far-away subjects and capture all important details of a scene.
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After the daily dawn-to-dusk fast, comes the feast, and even the most career-minded single women are dragooned back into the kitchen to help prepare the time-consuming harira bean soup and the traditional pancakes and sweets: melaoui, baghira, chebbakia, sfouf.
The view from the ramparts was breathtaking, of the Radnai snow tops painted horse-fat-yellow in the wintry dusk.
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It was the biggest such occasion since the Queen Mother's funeral in 2002, and the College of Arms gave special instructions that flags on buildings belonging to central and local government should be flown at half-mast from dawn to dusk.
Heading west from the park, pick up afternoon treats at New York iconic Zabar's food market (2245 Broadway), and later, as dusk unfolds, meander the serene firefly-flecked Riverside Park amid the Upper West Side's manifold joggers, strollers and dog owners, to the stunning outdoor 79th Street Boat Basin Cafe (W 79th St at the Hudson River) for a huckleberry vodka nightcap.
In addition, a delayed kick-off meant the game ended at dusk which caused more problems.
Every ten minutes, from dawn to dusk, a group of 12 climbers sets out--in jumpsuits and headsets--accompanied by a guide.
The food is very good, and the staff makes mealtime magic of its own, staging beach barbecues and, if the tide is low at dusk, drinks and dinner on a long, scorpion-tail sandbar way out in Copperfield Bay.
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Tom Cruise as an assassin in a silver-gray suit shows up in Los Angeles at dusk and expects to leave at dawn.
Bring packaged snacks, wet wipes, Ziploc bags, a change of clothes, disposable rain ponchos, sunscreen, bug repellent, water bottles, a small first-aid kit, small toys, coloring books and glow-in-the-dark sticks and necklaces (which the parks sell at dusk but they charge a fortune).
They are smart, well-meaning people, in top, well-resourced enterprises, who are working full weeks, often from dawn to beyond dusk.
Dusk is gathering, and down a dimly lit alley near the Grand Canal, a 60-strong audience is assembled in the Barbarigo-Minotto Palace, ready for a unique performance.
When he entered publishing in the mid-'90s, it was a sort of "wonderful twilight-drawn room that we've decided to spend out lives in and soon dusk will come, " Hodgman explains, with a bit of critically nostalgic poesy.
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All Star Auctions (www.allstarauctions.net) is currently offering a half-dozen mediocre oils, including the prototype poster for Robert Rodriguez's flick From Dusk Till Dawn.
Shijo Bridge, in front of you, might be the ground zero of Kyoto old and new: a monk is standing, stock-still, collecting coins, and the mountains to the north are blue in the dusk.
One curiosity of pre-railway Britain was that different parts of the country had their own time zones based on when dusk fell.
Other unusual critters, including long-nosed bandicoots, tree kangaroos and ringtail possums, also haunt the crater: roll up after dusk with a flashlight to get a glimpse of these nocturnal marsupials.
Evening cocktail cruises aboard the Zoe Yacht are a particularly sophisticated way to watch dusk fall over the city, with a bartender creating perfectly blended mojitos while you and your friends enjoy 360-degree views of Istanbul's skyline from the yacht's raised flybridge.
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