Update of research activities on time and frequency at the National Institute of Information and Communications Technology (NICT)

The National Institute of Information and Communications Technology (NICT) in Japan have five time and frequency research and service groups. Those are, Atomic Frequency Standards Group, Time and Frequency Measurements Group, Japanese Standard Time Group, Quasi-Zenith Satellite System Group, and Time Applications Group. In this paper, we introduce the recent activities of these five groups.