Hi Chris,
One time zone label (Z for UT) is valid in 8601. In SeaDataNet we took the decision some 10 years back to 'profile' ISO8601 by disallowing any character to the right of the seconds and defining the result as UT. The reason this was done was to prevent data delivery in local time with embedded corrections thereby simplify application development. In retrospect it would have been better to mandate a 'Z', but hindsight is a wonderful thing and this practice is now encoded in millions of physical files and so difficult to fix. Cheers, Roy. Please note that I partially retired on 01/11/2015. I am now only working 7.5 hours a week and can only guarantee e-mail response on Wednesdays, my day in the office. All vocabulary queries should be sent to [email protected]. Please also use this e-mail if your requirement is urgent. ________________________________ From: CF-metadata <[email protected]> on behalf of Chris Barker <[email protected]> Sent: 21 September 2016 20:52 To: Nan Galbraith Cc: [email protected] Subject: Re: [CF-metadata] Temporal nitpicks. Was: CF-metadata Digest, Vol 161, Issue 3 On Tue, Sep 20, 2016 at 5:45 AM, Nan Galbraith <[email protected]<mailto:[email protected]>> wrote: Can we recommend the use of ISO-compatible date strings, with the caveat that time zone should always be included? Yes, we really should do that (though it's an offset that is specified, not a time zone) It's unfortunate that ISO defaults to local time, and that seems to be non-negotiable. yup :-( This is what we use in the OceanSITES implementation of CF. Obviously, it won't solve everyone's needs, I'm trying to see whos needs it wouldn't suit folks may well want local time, rather than UTC, but having it be unspecified does no one any good. and specifying times in "true" local time, with DST baked in is simply a nightmare for everyone --- it really, really should be discouraged! -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [email protected]<mailto:[email protected]> ________________________________ This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. ________________________________
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