[R-pkg-devel] R CMD check "unable to verify current time"

Duncan Murdoch murdoch@dunc@n @end|ng |rom gm@||@com
Thu Aug 27 20:17:17 CEST 2020

R tries to get the time from

http://worldtimeapi.org/api/timezone/UTC or

The first one doesn't accept UTC as a timezone; it appears to want 
etc/UTC instead.  The second one is offline.

Duncan Murdoch

If both of those fail, you'll get the message you saw.

On 27/08/2020 1:23 p.m., John Fox wrote:
> Dear r-package-devel list members,
> I got the following note when checking two different packages today
> --as-cran, both under R 4.0.2 and under R-devel, on my Windows 10 and
> macOS Catalina systems, and on several platforms on rhub:
> 	* checking for future file timestamps ... NOTE
> unable to verify current time
> I'm writing to inquire about the note because no one else has mentioned
> this problem recently, in case it's produced by something that I'm
> doing. There is a discussion of a similar problem from 2019 at
> <https://stat.ethz.ch/pipermail/r-package-devel/2019q1/003577.html>.
> Both packages that I was checking are close to CRAN releases and so I'd
> like to know whether I can disregard the note.
> Any help would be appreciated.
> John

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