[tz] [PROPOSED] New edition of Calendrical Calculations

John Layt jlayt at kde.org
Tue Apr 3 16:34:56 UTC 2018

Nice to see a new edition, but sadly the same use restrictions still
apply, to quote:

"The Functions (code, formulas, and calendar data) contained in this book and/or
provided on the publisher’s web site for this book were written by Nachum Der-
showitz and Edward M. Reingold (the “Authors”), who retain all rights to them
except as granted in the License and subject to the warranty and
liability limitations
below. These Functions are subject to this book’s copyright.
In case there is cause for doubt about whether a use you contemplate is
authorized, please contact the Authors.

1. LICENSE. The Authors grant you a license for personal use. This
means that for
strictly personal use you may copy and use the code and keep a backup
or archival copy
also. The Authors grant you a license for re-use within
non-commercial, non-profit
software provided prominent credit is given and the Authors’ rights
are preserved. Any
other uses, including, without limitation, allowing the code or its
output to be accessed,
used, or available to others, are not permitted."

Basically means I've never been able to read it for fear of taint...


On 3 April 2018 at 06:25, Paul Eggert <eggert at cs.ucla.edu> wrote:
> * theory.html (Calendrical issues):
> Update Reingold & Dershowitz citation to 4th edition.
> ---
>  theory.html | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> diff --git a/theory.html b/theory.html
> index 4d8726d..596b32c 100644
> --- a/theory.html
> +++ b/theory.html
> @@ -1155,10 +1155,10 @@ based on guesswork and these guesses may be corrected or improved.
>  Calendrical issues are a bit out of scope for a time zone database,
>  but they indicate the sort of problems that we would run into if we
>  extended the time zone database further into the past.
> -An excellent resource in this area is Nachum Dershowitz and Edward M.
> -Reingold, <cite><a
> -href="https://www.cs.tau.ac.il/~nachum/calendar-book/third-edition/">Calendrical
> -Calculations: Third Edition</a></cite>, Cambridge University Press (2008).
> +An excellent resource in this area is Edward M. Reingold
> +and Nachum Dershowitz, <cite><a
> +href="https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition">Calendrical
> +Calculations: The Ultimate Edition</a></cite>, Cambridge University Press (2018).
>  Other information and sources are given in the file '<code>calendars</code>'
>  in the <code><abbr>tz</abbr></code> distribution.
>  They sometimes disagree.
> --
> 2.7.4

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