Leap seconds

[Ronald G. Tolley]

>> 	1973 June 30 23:59:60
>> 	1973 June 30 23:59:61
> 
>     Positive leap seconds were inserted in all NBS broadcasts
>     at the end of June 30, 1972 and December 31, 1972 thru 1978.
> 
>     [ All years since 1978 have had leap seconds.  Bob]

A AP article out of  Washington  written in about May 1985  states  that
"that  [adding leap  seconds] was done twice in 1972 and once every year
since except 1980 and 1984."  The same article stated that the 1985 leap
second would be the last second in June.