On 2023-04-24, at 14:20, Michal Vasko <[email protected]> wrote:
> 
> canonical

Hi Michal,

I don’t know what exactly “canonical” means here.

As a general rule, timestamps used by machines should not use timezones, so you 
should use

2023-02-22T22:00:00Z

If there is a use for indicating the timezone offset a particular system was in 
when the timestamp actually occurred, then you might indicate that with a 
timezone offset:

2023-02-23T11:00:00+13:00

The point in time at which you formatted this datetime is never relevant.

I’m having a hard time imagining when you want to supply this hint at an 
individual timestamp level — I would believe these all should be without 
timezone offsets, i.e., Z.  
Your system information might usefully have timezone information (see also 
below), if timezone is at all relevant to your system.


Note that if you have additional information (“hints”) that you want to send 
with the actual timestamp, you probably want to know about SEDATE’s IXDTF:

https://www.ietf.org/archive/id/draft-ietf-sedate-datetime-extended-07.html

I don’t know when YANG will pick this up; I don’t know how important these 
hints are in management information (and that my uncertainty applies to using 
the timezone offset defined by RFC 3339 in YANG as well).

Grüße, Carsten

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