master dcc5644152: Leap seconds are planned to go away by the year 2035.

[Paul Eggert]

branch: master
commit dcc564415252c97f92c9a3afe306d515b0f0fd8c
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Leap seconds are planned to go away by the year 2035.
---
 doc/misc/calc.texi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/misc/calc.texi b/doc/misc/calc.texi
index 89a340e734..ef9990c057 100644
--- a/doc/misc/calc.texi
+++ b/doc/misc/calc.texi
@@ -11040,7 +11040,8 @@ the year even for older dates.   The customizable 
variable
 have Calc's date forms switch from the Julian to Gregorian calendar at
 any specified date.
 
-Today's timekeepers introduce an occasional ``leap second''.
+A few platforms support leap seconds, such as the time stamp
+1972-06-30 23:59:60 UTC, an extra second appended to June 1972.
 These do not occur regularly and Calc does not take these minor
 effects into account.  (If it did, it would have to report a
 non-integer number of days between, say,