Brooks Harris said: > In particular, 8601 implies use of "offset > from UTC", as indication of "local time", but conflates this with > Daylight Savings.
No, it doesn't. It uses offset from UTC as an indication of, wait for it, offset from UTC. > For example, a date and time in New York City might be > represented as 2014-07-04T00:00:00-05:00 which misses the fact that > Daylight was in effect, or 2014-07-04T00:00:00-04:00 which misses the > fact the the fixed timezone offset is -05:00. No. 2014-07-04T00:00:00-05:00 means the start of the day according to a clock observing an offset of -5 hours. Someone in New York City might have such a clock if they needed to correspond with Chicago. 2014-07-04T00:00:00-04:00 means the start of the day according to a clock observing an offset of -5 hours. That is the offset typically observed [1] in New York City on that date. The use of an offset does *NOT* imply either a time zone or the presence or absence of an bi-annual shift. My office in Cambridge has clocks on the wall showing the time in offsets -07:00, -04:00, +01:00, +02:00, +05:30, and +08:00, because those are the ones we regularly communicate. Though they all show different numbers, they are all showing the same time. [1] But see R.v Haddock [1967] BBC 1.4. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/listinfo/leapsecs