ROA Time

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ROA Time is the official time of Spain. It is established by ROA, the Royal Institute and Observatory of the Armada (Armada being the name of the Spanish Navy in Spanish), at San Fernando, Cádiz.

Broadcasting methods

ROA broadcasts the official time in Spain using the following methods:^[1]

1. Transmission of
   MSF60 (also known as NPL) from the United Kingdom
   .
2. Via hotline (Phone number: +34 956 59 94 29), using a time information broadcasting protocol widely used in Europe (European Telephone Code Standard). Access is limited to two minutes per call and admits international calls.
3. NTP Protocol (Network Time Protocol), through two Internet servers placed in San Fernando and a third one placed in Madrid (NTP Servers: hora.roa.es and minuto.roa.es, both available through ntp.roa.es).
4. Timestamping. The ROA, as a TSA (Time Stamping Authority), provides a timestamping server for official certifications through a standard digital certificate x509 v3. This system is used by the whole public administration in Spain for timestamping their transactions. This service is available through the SARA Network
   (Sistema de Aplicaciones y Redes para las Administraciones).

External links

• Real Observatorio de la Armada - Time, Real Instituto y Observatorio de la Armada (Royal Institute and Observatory of the Spanish Navy)
• ROA official time