August 21, 2022 The latest update to the Recommended values of standard frequencies, published by the CCL-CCTF Frequency Standards Working Group (CCL-CCTF-WGFS) was strongly influenced by ROCIT activities. The new values were used for the first time for the calculation of International Atomic Time (TAI) in the April 2022 edition of Circular T (no. 412), allowing optical clocks to steer TAI with lower uncertainty. Circular T no. 412 included contributions from four optical clocks, including clocks at ROCIT partners INRIM and SYRTE.