Am 28.07.2021 um 15:16 schrieb William F Pokorny:

> Just to toss it out there, for as long as I've used datetime(now) as in:
> 
> #version 3.8;
> #debug concat("v3.8 default -> ",datetime(now),"\n")
> 
> I've gotten back:
> 

> 
> because the default format strings has a 'Z' on the end where I suspect 
> ' %Z' was intended. In the povr branch I changed to ' %z' as I think the 
> time offset more general.

The `datetime` function with default values works as documented:

"The default for the STRING parameter format is %Y-%m-%d %H:%M:%SZ"


I'm not the author of that functionality, but according to my 
understanding, this is entirely intentional:

Since the information provided by "now" is based on UTC, and the 
`strftime` conversion specifiers are time zone agnostic(*), the printed 
date and time are also with respect to UTC.

In full compliance with ISO 8601, this is indicated by appending a 
literal uppercase `Z` right after the time, which is the official time 
zone designator for UTC.


(*)Except for `%Z` or `%z` of course.

Speaking of which: Appending either of those instead of "Z" would 
actually give a wrong time, unless you first convert `now` to local time.

Also, per ISO 8601 any time zone designator should be appended to the 
time without any intervening space.

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