[tz] Bulletin C 59

[Chris Woodbury]

Bulletin C 59 has been released on 2020-01-07 at 12:50:44 by IERS and there will be no leap-second  in June 2020.
There are also a new IERS leap-seconds list file (leap-seconds.3787382231) and Leap_Second.dat file (touched but
unchanged).
 
Visit ftp://hpiers.obspm.fr/iers/bul/bulc/

By all indications, there will be an unusually long interval before the next leap-second (July 2021 or later).
See IERS Bulletin A at ftp://cddis.gsfc.nasa.gov/pub/products/iers/ser7.dat.  (USNO's FTP sites are under
construction.)