Point well taken. Removing the colon is not a problem either if a leading zero is used for single digit hours. My cell phone is set to display both local time and UTC simultaneously on its face. For example it displays two time selected by me: "London Fri Mar 13:44pm" and "Current time zone Fri Mar 13 9:44am" simultaneously. A 24-hour display would be much better.
   Stan Doore
.


----- Original Message ----- From: "John M. Steele" <[email protected]>
To: "U.S. Metric Association" <[email protected]>
Sent: Thursday, March 12, 2009 3:46 PM
Subject: [USMA:43717] Re: Date Time




Yes. Technically that is a date field followed by a time field. One aspect of ISO8601 that gets a bit unwieldy is that a space is not permitted. In a combined date/time field, the separator "T" must be used without space. It will be about 3:45 PM EDT by the time I finish this note.

Properly that is 2009-03-12T15:45 is I wish to designate local time, or 2009-03-12T15:45-04:00 if I wish to designate my time zone (relative to UTC). It is a bit lengthy for human readability, but ISO 8601 is really for machine parsing. The spaces that would improve human readability are non compliant (although many choose to non-comply).

"Z" (Zulu) is reserved for UTC time zone, so above could be written 2009-03-12T19:45Z.

--- On Wed, 3/11/09, STANLEY DOORE <[email protected]> wrote:

From: STANLEY DOORE <[email protected]>
Subject: [USMA:43715] Date Time
To: "U.S. Metric Association" <[email protected]>
Date: Wednesday, March 11, 2009, 6:18 AM
This morning (2009-03-11 edt) on Fox & Friends TV
program, they showed a video clip from Japan of a volcano
eruption which used the yyyy-mm-dd hh:ss format.
    I believe the content was:  2009-03-10 ??:??.  It was
very easy to read and understand since the data were
sequential.  Don't know the time zone.

Stan Doore


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