Secundum intercalarium

Annus  30 Iunii23:59:60  31 Decembris23:59:60 1972 +1 sec +1 sec 1973   +1 sec 1974   +1 sec 1975   +1 sec 1976   +1 sec 1977   +1 sec 1978   +1 sec 1979   +1 sec 1980    1981 +1 sec  1982 +1 sec  1983 +1 sec  1984    1985 +1 sec  1986    1987   +1 sec 1988    1989   +1 sec 1990   +1 sec 1991    1992 +1 sec  1993 +1 sec  1994 +1 sec  1995   +1 sec 1996    1997 +1 sec  1998   +1 sec 1999    2000    2001    2002    2003    2004    2005   +1 sec 2006    2007    2008   +1 sec 2009    2010    2011    2012 +1 sec  2013    2014    2015 +1 sec  2016   +1 sec 2017    2018    2019    2020    2021   
Secundum intercalarium est secundum intercalationis quod additur ut universale tempus coordinatum (UTC) cum tempore solari (GMT) coordinetur.

Secundum additur quando observationes astronomicae hoc exigunt. Additur in fine diei 30 Iunii vel 31 Decembris sic, ut UTC non magis quam ±0,9 secundi a GMT digrediatur.  secundum addendum declarat. 

Notae

Bibliographia
Ahuja, Anjana. 2005. "Savouring the last leap second in history." New Straits Times, 30 Octobris 2005, F10.
Grossman, Wendy M. 2005. "Wait a Second." Scientific American, November, 12–13.
Finkleman, David, et al. 2011. "The Future of Time: UTC and the Leap Second." American Scientist 99 (4): 312–19. arXiv:1106.3141. .
Kamp, Poul-Henning. 2011. "The One-Second War." Communications of the ACM 54 (5): 44–48. .
McCarthy, Dennis D.,  et P. Kenneth Seidelmann. 2009. Time: From Earth Rotation to Atomic Physics. Weinheim: Wiley-VCH.

Nexus externi
 De secundo intercalario 

Categoria:Calendarium
Categoria:Curatio temporis