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Fix a documentation bug in this man page: The Gregorian Reformation in Great

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Britain and its colonies eliminated 11 days (not 10), following
September 2, 1752.

From "A.D. 1751. Anno vicesimo quarto GEORGII II. CAP. XXIII.
      An Act for Regulating the Commencement of the Year; and for
      Correcting the Calendar now in Use.":

"... and that the natural Day next immediately following the said 2nd Day of
 *September* [1752], shall be called, reckoned and accounted to be the 14th
 Day of *September*, omitting for that Time only the 11 intermediate nominal
 Days of the common Calendar;

 and that the several natural Days, which shall follow and succeed next after
 the said 14th Day of *September*, shall be respectively called, reckoned and
 numbered forwards in numerical Order from the said 14th Day of *September*,
 according to the Order and Succession of Days now used in the present
 Calendar; "

Added a caution note on using cal for very old dates.

Problem mentionned in PR 5215 by John Franklin (franklin@bev.net).

Thanks to Perry Metzger for his comments and for reviewing this man page.
This commit is contained in:
wennmach 1999-11-03 14:32:25 +00:00
parent 34eaf12c8f
commit 8d67a1ce88
1 changed files with 9 additions and 5 deletions
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14
usr.bin/cal/cal.1
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@ -1,4 +1,4 @@
.\" $NetBSD: cal.1,v 1.7 1997/10/18 12:24:53 lukem Exp $
.\" $NetBSD: cal.1,v 1.8 1999/11/03 14:32:25 wennmach Exp $
.\"
.\" Copyright (c) 1989, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@ -71,12 +71,16 @@ displayed.
.Pp
A year starts on Jan 1.
.Pp
The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd
of September.
In the USA and Great Britain the Gregorian Reformation occurred in 1752.
By this time, most countries had recognized the reformation (although a
few did not recognize it until the early 1900's.)
Ten days following that date were eliminated by the reformation, so the
calendar for that month is a bit unusual.
Eleven days following September 2, 1752 were eliminated by the reformation,
so the calendar for that month is a bit unusual.
.Sh NOTE
In view of the chaotic way the Gregorian calendar was adopted throughout
the world in the years between 1582 and 1923 make sure to take into account
the date of the Gregorian Reformation in your region if you are checking a
calendar for a very old date.
.Sh HISTORY
A
.Nm