timestamp notation @gnupg.org
expires2011 at ymail.com
Sun Jun 19 14:03:25 CEST 2011
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On Saturday 18 June 2011 at 10:50:08 PM, in
<mid:BANLkTikF1GzDt7tVjh7aqwzmYjzXwZJc6Q at mail.gmail.com>, Jerome Baum
> Exactly. 5 Euros is still 5 Euros, whether you say
> "5,00 Euros", "5,-- Euros", "5 Euros, but no cents", "5
> Euros exactly", "5 Euros sharp", or just "5 Euros".
> Still the same thing.
The point I was making was stating a value accurate to a different
number of significant figures subtly alters the meaning. "5 Euros" was
evidently a poor example but it does illustrate there can be a
difference. A retailer stating the price of something in any of the
styles you mention above would mean exactly the same thing. A friend
or colleague discussing the price or value of something who stated "5
Euros" rather than any of the more exact forms, quite possibly does
not mean "5 Euros exactly."
Your example time period of "the 20th century" clearly starts and ends
at midnight, so nothing is effectively changed by your switch from
omitting the time in "1901-01-01 / P100Y" to including it in
"1901-01-01 T 00:00:00 / 2001-01-01 T 00:00:00," even though the
second form is stated to a greater level of accuracy.
More generally, a time period of YYYY-MM-DD/PnD does not necessarily
run from midnight at the beginning of the first day to midnight at the
end of the last day; in the absence of any further information this
cannot be known, and is not a safe assumption. Context may show
something different, such as business hours only.
But I digress.
MFPA mailto:expires2011 at ymail.com
Those who do not read are no better off than those who cannot.
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