Dr Ricardo José De Carvalho
Observatório Nacional/Divisão de Serviços da Hora Legal Brasileira [ON/DISHO]
R. Gal. José Cristino n° 77
São Cristóvão
CEP 20921-400 Rio de Janeiro
Brazil
Consultative Committee for Time and Frequency
Official Observers (online)
From 18 to 19 September 2025
Consultative Committee for Time and Frequency
Official Observers
From 14 to 22 November 2024
General Conference on Weights and Measures
Delegates (online)
From 15 to 18 November 2022
CCTF Working Group on TAI
Participant (online)
12 September 2025
CCTF Working Group on TAI
Participant
09 July 2025
CCTF Working Group on TAI
Participant
25 June 2025