Where best to be every hour of the day to catch the planet's top sights and experiences - even if you'll need a teletransporter to make it happen.
12 midnight: Kilimanjaro, Tanzania
Steel yourself: this is the time to start your gruelling summit attempt on the 5,895m mountain. With any luck youʼll be up there by sunrise...
1am: New York, USA
Head up the Empire State Building. Its observation deck is open until 2am – the ultimate place to survey the city that never sleeps.
2am: Lausanne, Switzerland
Listen for the last cry of the nightwatchman – since 1405 a guardian has called from the Cathedral's belfry every hour, on the hour, from 10pm to 2am: 'C'est le guet; il a sonné lʼheure' ('This is the nightwatch; the hour has struck').
3am: London, England
Join the early-rising meat traders of 140-year-old Smithfield Market – though youʼll have to wait until 6am for the nearby Hope pub to open.
4am: Toronto, Canada
Grab an early breakfast at Fran's. This atmospheric diner has been serving favourites such as prize-winning pancakes and baby rack ribs 24 hours a day since 1940.
5am: Atacama Desert, Chile
Wrap up warm for the El Tatio Geysers. These high-altitude geothermal gurglings are most spectacular at sunrise, when their steam condenses in the cold air.
6am: Mumbai, India
7am: Sydney, Australia
Well, 6.55am to be precise: the time when behind-the-smelly-scenes auction-action tours of Sydney Fish Market begin. Mon, Thurs, Fri.
8am: Mexico City, Mexico
Prepare for the pomp and parading that accompanies the daily flag-raising in the capital's super-sized Zócalo square.
9am: Paris, France
Get to the Louvre – perhaps the worldʼs biggest, bestest repository of art – as soon as the doors open, to make the most of your day. Closed Tues.
10am: Abu Dhabi, UAE
Join a free guided tour to better appreciate the elegant Sheikh Zayid Grand Mosque, one of the largest in the world.
11am: Athens, Greece
Line Syntagma Square to watch the Changing of the Guards at the Tomb of the Unknown Soldier. The pompom-slippered soldiers change every hour, on the hour, though Sundays at 11am are the main event.
12 noon: Santiago de Compostela, Spain
Walk into the colossal cathedral – the goal for every peregrino making the epic Camino de Santiago pilgrimage – for the special Pilgrim's Mass, held daily at noon.
1pm: Edinburgh, Scotland
Cover your ears for the Castle's One oʼclock Gun, which has been fired from the battlements almost daily since 1861. Not open Sundays.
2pm: Jerash, Jordan
Come over gladiatorial at the Chariot Show, where sandalled warriors re-enact Roman entertainments in the cityʼs ancient Hippodrome. Sat, Sun, Mon, Wed, Thurs.
3pm: Istanbul, Turkey
Take afternoon tea in the piano-tinkled lounge of the Four Seasons Hotel.
4pm: Wagah, India-Pakistan border
Cheer on the gun-toting, foot-stomping one-upmanship between India and Pakistan, played out at the daily closing of the international border.
5pm: Memphis, USA
Watch as the resident mallards of the Peabody Hotel are led from the foyer fountain, along a red carpet, to their penthouse home.
6pm: Borneo, Malaysia
Wait at the entrance to Gunung Mulu National Park's Deer Cave to watch millions of bats make their en-masse evening exit.
7pm: Marrakesh, Morocco
Tantalise your tastebuds as the Djemaa el-Fna main square turns into an atmospheric open-air night market.
8pm: Hong Kong
Take your place on Tsim Sha Tsui Waterfront to watch the Symphony of Lights laser show sparkle over the skyscrapers.
9pm: Mauna Kea, Hawaii
Star-gaze from the top of 4,200m Mauna Kea: astronomy appreciation programmes are held at the observatory here every night, 6pm-10pm.
10pm: Buenos Aires, Argentina
Feel the power and the passion of tango at Torquato Tasso: sultry shows are almost nightly at this authentic San Telmo spot, Tues-Sat.
11pm: Reykjavík, Iceland
Last orders? No chance. Nowʼs the time to begin your Icelandic runtur (pub crawl) – at weekends most bars open til 4am.