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    Re: Basic celestial naviagtion using a scientific calculator
    From: Gary LaPook
    Date: 2010 Aug 13, 00:45 +0200

    There is an easy workaround. Just remember that one-tenth of a minute is 
    six seconds. Just multiply that tenth by six in your head before 
    entering it. For example, to enter 34° 16.7' you enter 34.1642 having 
    multiplied the .7' by six in your head.
    Same thing when reading out a result, just divide the seconds by six in 
    your head, e.g. 107.3419 becomes 107° 34.3' after rounding the trailing  
    "19"" to the nearest multiple of "6" and then dividing by "6".
    David Smith wrote:
    > I would like to speed up the checking of calculations in sight 
    > reduction exercises by using an electronic calculator. I have never 
    > used a scientific calculator before, but they don't look too difficult 
    > to master. However the two Casio calculators that I have, the Casio 
    > fx-82MS and fx-82w appear to only work in DDDMMSS.
    > Is there a way of entering DDDMM.M and getting answers in the same 
    > format? If this is not possible, are there any common calculators or 
    > iPhone/iPad apps which are useful for sight reduction calculations? As 
    > I want to get a good familiarity with the printed Nautical Almanac and 
    > sight redution tables, I am not lookiing for anything more 
    > sophisticated than basic arithmatic in DDDMM.M format.
    > I'd value your advice.
    > Cheers,
    > David.
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