On Tue, Dec 13, 2016 at 8:41 PM, Pierpaolo Bernardi <olopierpa at gmail.com> wrote: > with further links to pursue for more. This article, as far as I can tell, looks both complete and authoritative: http://astronomia.ign.es/rknowsys-theme/images/webAstro/paginas/documentos/Anuario/lahoraoficialenespana.pdf