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[ Code: cal 9 1752 can anybody tell me why is it so many days are missing ? thank you...
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  1. #1
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    this is funny or is it?


    [
    Code:
    cal 9 1752
    can anybody tell me why is  it so many days are missing ?
    thank you
    Portability is for people who cannot programme

  2. #2
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    interesting...

    I'm not sure... how did you find this? Are there other months where it occurs?

  3. #3
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    Re: interesting...

    Quote Originally Posted by compallday
    I'm not sure... how did you find this? Are there other months where it occurs?
    read it in a book.
    he tells u to figure out the answer
    Portability is for people who cannot programme

  4. $spacer_open
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  5. #4
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    Would that be when the Julian calender was replaced by the Gregorgian calender. (honest, I haven't Googled it yet) After so many years of exactly 365 days, that extra 1/4 day that we accomodate with leap years had shifted the months out of sync with the seasons. Better astronomical observations and a greater understanding of the underlying planetary motions brought the problem to light.
    /IMHO
    //got nothin'
    ///this use to look better

  6. #5
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    I found this:

    The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd of September. By this time, most countries had recognized the reformation (although a few did not recognize it until the early 1900's.) Ten days following that date were eliminated by the reformation, so the calendar for that month is a bit unusual.
    Here:
    http://www.hmug.org/man/1/cal.html

    Could explain it.
    Jeremy
    Registered Linux user #346571
    "All The Dude ever wanted was his rug back" - The Dude

  7. #6
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    Re: interesting...

    Quote Originally Posted by compallday
    Are there other months where it occurs?
    here's another:
    Quote Originally Posted by http://www.geocities.com/calendopaedia/gregory.htm
    The papal bull of February 1582 decreed that 10 days should be dropped from October 1582 so that 15 October should follow immediately after 4 October, and from then on the reformed calendar should be used.

    This was observed in Italy, Poland, Portugal, and Spain. Other Catholic countries followed shortly after, but Protestant countries were reluctant to change, and the Greek orthodox countries didn't change until the start of this century. Note that countries who delayed the change-over beyond 1700 AD had to add eleven days as they had inserted an extra leap year.
    Contrary to what I guessed previously, 1752 was an adjustment to the Gregorian calendar 250 years after its initial adoption.
    /IMHO
    //got nothin'
    ///this use to look better

  8. #7
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    thank you
    Portability is for people who cannot programme

  9. #8
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    So the programmers of cal took this into account.Wow , and to
    think that Unix programmers have been accused of sloppiness.

    It appears that the Solaris man page for cal mentions the answer:
    An unusual calendar is printed for September 1752. That is
    the month 11 days were skipped to make up for lack of leap
    year adjustments.
    And here's what the Linux man page says:
    The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
    of September. By this time, most countries had recognized the reforma-
    tion (although a few did not recognize it until the early 1900's.) Ten
    days following that date were eliminated by the reformation, so the cal-
    endar for that month is a bit unusual.
    Moral is: alsways read the manual

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