[LEAPSECS] Definition of Standard time - Brooks Harris

[Tony Finch]

Clive D.W. Feather <clive at davros.org> wrote:

> Brooks Harris said:

> >

> > Wikipedia (not always an authoritative source)

> > Standard time

> > http://en.wikipedia.org/wiki/Standard_time

> > states:

> >

> > "Where daylight saving time is used, the term standard time typically

> > refers to the time without the offset for daylight saving time.".

> >

> > That is consistent with my understanding of "Standard time".

>

> But not mine.

>

> "standard time" is to be contrasted with "local time". Both GMT and BST are

> "standard time" in the UK.


That isn't the contrast in ISO 8601. It says:

	2.1.16 local time

	locally applicable time of day such as standard time of day, or a
	non-UTC based time of day

The relevant distinction is from the late 1800s, between local mean solar
time and time based on a standard meridian, as in railway time. So ISO
8601 is right that summer time is also a standard time (in this sense)
even though the North American terminology that distinguishes between
(original) standard time and daylight saving time is clearer.

Tony.
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