On Fri, 2016-04-22 at 14:22 -0700, Paul Hirose wrote:
>
> That term "extraordinary day" is new to me in the context of UTC. Is
> it
> something you invented? In the paper you use it repeatedly and avoid
> saying "leap second" until the conclusion, where you propose a name
> for
> the new time scale ("proleptic UTC with leap seconds").
> I did invent the term "extraordinary day". I tried to avoid the term "leap second" because I was concerned that the term would cause confusion among those new to the subject. A "leap year" is a year with an extra day. A day with an extra second should therefore be called a "leap day", but instead we call the extra second a "leap second". Then there is the "negative leap second", when we have a day of 86,399 seconds. To avoid what I felt was confusing terminology I invented two kinds of "extraordinary day", one with 86,399 seconds and the other with 86,401 seconds. A day with 86,400 seconds is an "ordinary day". John Sauter ([email protected]) -- PGP fingerprint = E24A D25B E5FE 4914 A603 49EC 7030 3EA1 9A0B 511E
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