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125 Years of Longitude 0 0' 00" At Greenwich

An anonymous reader writes "This week marks the 125th anniversary of the International Meridian Conference, which determined that the prime meridian (i.e., longitude 0 0' 00") would travel through Greenwich, UK. One of the reasons that Greenwich was agreed upon 'was that 72% of the world's shipping already depended on sea charts that used Greenwich as the Prime Meridian.' Sandford Fleming's proposal of a single 24-hour clock for the entire world, located at the center of the Earth and not linked to any surface meridian, was rejected / not voted on, as it was felt to be outside the purview of the conference."

7 of 429 comments (clear)

  1. Happy birthday to 180th meridian too ! by ls671 · · Score: 4, Informative

    And don't forget the 180th meridian that came with it. When you cross the 180th meridian, you have to set your watch back/forward 23 hours !

    Quite a few people are unaware of it ;-))

    http://adsabs.harvard.edu/full/1919PA.....27..416F

    --
    Everything I write is lies, read between the lines.
    1. Re:Happy birthday to 180th meridian too ! by TBoon · · Score: 3, Informative

      Actually, you'd have to set it 24 hours when crossing the 180th. The (theoretical) timezone-limits for +12 and -12 are only 7.5 degrees each, compared to 15 degrees for the all others. Of course in real life, it only crosses land i Russia and Fiji, and they bend the dateline around themselves to avoid this, so this should only happen at sea.

  2. Re:Not true for WGS84 by iYk6 · · Score: 4, Informative

    Your link says nothing at all about WGS84. Here is one that does: http://en.wikipedia.org/wiki/World_Geodetic_System

  3. Re:125 MORE years until the US gets time... by voidphoenix · · Score: 3, Informative

    While a longsword's reach is about 5', that includes the arm that wields it. Longswords are about 4' in overall length, with around 3' of blade. That rope would be 7-1/2 longswords, or 10 longsword-blades. :)

  4. Re:125 MORE years until the US gets time... by Muad'Dave · · Score: 3, Informative

    That's because of the George M. Cohan song "I'm a Yankee Doodle Dandy" which includes the line "... born on the 4th of July."

    The tablet that the Statue of Liberty is holding says, "July IV, MDCCLXXVI". I've always known it as Independence Day or July [the] 4th.

    --
    Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
  5. NTSC came much earlier. by ThrowAwaySociety · · Score: 4, Informative

    - Video. The PAL standard is better quality than NTSC (Never The Same Color), so why did the Americas adopt an inferior option?

    That's sort of like asking why we adopted the clearly inferior analog STDV standard instead of digital HDTV. NTSC was standardized in 1953, PAL was not standardized until 1963. Naturally, PAL was the superior standard...it was based around technology that was ten years more advanced.

  6. Re:125 MORE years until the US gets time... by Late+Adopter · · Score: 3, Informative

    French is a useful and underrated language. It's the most predominant language on the European continent in areas without good English speakers. In my experience, native Italians are ok at English, the Spanish and Portuguese are great, but the French are very poor (I'm less sure about Eastern Europe). German is practically English already.

    It's also an official language of international diplomacy (it comes *before* Spanish translations on US Passports), and is spoken in a lot of North African and Caribbean nations, so you have more places available to comfortably vacation =)