[tz] leapseconds.awk, LEAP directives and references

Marshall Eubanks marshall.eubanks at gmail.com
Sun Apr 9 23:28:47 UTC 2017

On Sun, Apr 9, 2017 at 5:28 PM, Paul Eggert <eggert at cs.ucla.edu> wrote:

> On 04/09/2017 05:59 AM, Marshall Eubanks wrote:
>> I confirm that IERS  allows for unlimited copying and use of
>> this and other EOP file,...as far you mention the reference!
> Thanks, this is good news, as it should let us redistribute the file as
> part of the tz database. To make the legal situation clear to everybody,
> would you please state the copying terms in or near the files in question?
> For example, you could add the following text to the contents of <
> https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat>:
>   # Copyright 2017 International Earth Rotation and Reference Systems
> Service.
>   # This file is licensed under the Creative Commons Attribution 4.0
>   # International License. To view a copy of this license, visit
>   # http://creativecommons.org/licenses/by/4.0/ or send a letter to
>   # Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
> Another possibility is to put similar text into <
> https://hpiers.obspm.fr/iers/bul/bulc/README> and mention that your
> copyright notice applies to all the files in that directory.
I have made the suggestion.


> I am suggesting the CC BY 4.0 license because it matches the intent stated
> informally in your email; the wording above is taken from <
> https://creativecommons.org/choose/non-web-popup?license_co
> de=by&version=4.0>. Your organization may prefer some other license
> and/or wording; the details don't matter as long as it's clear that
> downstream users can copy the file unaltered and can use the file's data
> without restriction.
> The above text assumes that the IERS holds the copyright; if not, please
> substitute the correct copyright holder's name.
> Thanks again.
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