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DST's clock shifts have the obvious disadvantage of complexity. People must remember to change their clocks; this can be time-consuming, particularly for mechanical clocks that cannot be moved backward safely. People who work across time zone boundaries need to keep track of multiple DST rules, as not all locations observe DST or observe it the same way. The length of the calendar day becomes variable; it is no longer always 24 hours. Disruption to meetings, travel, broadcasts, billing systems, and records management is common, and can be expensive. During an autumn transition from 02:00 to 01:00, a clock reads times from 01:00:00 through 01:59:59 twice, possibly leading to confusion.

During the fall time shift from 02:00 to 01:00, how many times will a clock show the times between 01:00:00 and 01:59:59?
Answer: twice
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Napoleon married Josephine de Beauharnais in 1796, when he was 26; she was a 32-year-old widow whose first husband had been executed during the Revolution. Until she met Bonaparte, she had been known as "Rose", a name which he disliked. He called her "Josephine" instead, and she went by this name henceforth. Bonaparte often sent her love letters while on his campaigns. He formally adopted her son Eugene and cousin Stephanie and arranged dynastic marriages for them. Josephine had her daughter Hortense marry Napoleon's brother Louis.

How old was Josephine de Beauharnais when she was married to Napoleon?
Answer: 32
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Modern Greek has, in addition to Standard Modern Greek or Dimotiki, a wide variety of dialects of varying levels of mutual intelligibility, including Cypriot, Pontic, Cappadocian, Griko and Tsakonian (the only surviving representative of ancient Doric Greek). Yevanic is the language of the Romaniotes, and survives in small communities in Greece, New York and Israel. In addition to Greek, many Greeks in Greece and the Diaspora are bilingual in other languages or dialects such as English, Arvanitika/Albanian, Aromanian, Macedonian Slavic, Russian and Turkish.

Do the people of Greek ascendancy only speak Grecian languages ?
Answer:
bilingual in other languages or dialects such as English, Arvanitika/Albanian, Aromanian, Macedonian Slavic, Russian and Turkish.