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Subject: Re: [9front] Re: commit 671d8daa0f2d7f067b8ab3d547adbd718da93fe9
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Quoth Jacob Moody <moody@posixcafe.org>:
> On 2/13/24 11:42, Anthony Martin wrote:
> > That reference has been there since first edition Unix:
> > 
> > 	For years when several calendars were in vogue in
> > 	different countries, the calendar of England (and
> > 	therefore her colonies) is printed. P.S. try cal of 1752.
> > 
> > The 1752 is the key here. That is the year that England (and
> > her colonies) switched to the Gregorian calendar. France did
> > it in 1582, Russia in 1918, etc. That note is telling you which
> > calendar the cal(1) command uses. It's important.
> > 
> > Why get rid of it?
> > 
> > Cheers,
> >   Anthony
> 
> I admit I was unfamiliar with the varying adoption dates.
> I thought it was referring to the use of the Gregorian calendar
> itself, not the adoption date. I removed it because referring to
> England's colonies in the present tense rubs me the wrong way.
> I pitched this on the grid and others had also shared my reading of this.
> 
> I agree that we can document that this is the adoption rate used, but I would
> like to be more direct with it.
> 
> - moody

Please be very careful touching any political phrasing around
time. Timezones are political entities.

OpenBSD's phrasing:

     The Gregorian Reformation is assumed to have occurred in 1752 after the
     2nd of September.  By this time, most countries had recognized the
     Reformation (although a few did not recognize it until the early 1900s).
     Eleven days following that date were eliminated by the Reformation, so
     the calendar for that month is a bit unusual.

Ubuntu and FreeBSD's phrasing (and a new flag):

     -s country_code
             Assume the switch from Julian to Gregorian Calendar at the date
             associated with the country_code.  If not specified, ncal tries
             to guess the switch date from the local environment or falls back
             to September 2, 1752.  This was when Great Britain and her
             colonies switched to the Gregorian Calendar.