[R] strptime with +03:00 zone designator

Roy Mendelssohn - NOAA Federal roy@mende|@@ohn @end|ng |rom no@@@gov
Mon Nov 6 00:56:47 CET 2023

what if you try lubridate::as_datetime('2017-02-28T13:35:00+03:00’)


> On Nov 5, 2023, at 3:45 PM, Richard O'Keefe <raoknz using gmail.com> wrote:
> I have some data that includes timestamps like this:
> 2017-02-28T13:35:00+03:00
> The documentation for strptime says that %z expects
> an offset like 0300.  I don't see any way in the documentation
> to get it to accept +hh:mm with a colon separator, and
> everything I tried gave me NA as the answer.
> Section of ISO 8601:2004(E) allows both the
> absence of colons in +hh[mm] (basic format) and the
> presence of colons in +hh:mm (extended format).
> Again in section where a zone offset is combined
> with a time of day: if you have hh:mm:ss you are using
> extended format and the offset MUST have a colon; if
> you have hhmmss you are using basic format and the
> offset MUST NOT have a colon.  And again in section
> 4.3.2 (complete representations of date and time of day).
> If you use hyphens and colons in the date and time part
> you MUST have a colon in the zone designator.
> So I am dealing with timestamps in strict ISO 8601
> complete extended representation, and it is rather
> frustrating that strptime doesn't deal with it simply.
> The simplest thing would be for R's own version of
> strptime to allow an optional colon between the hour
> digits and the minute digits of a zone designator.
> I'm about to clone the data source and edit it to
> remove the colons, but is there something obvious
> I am missing?
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