• Q1 2021: open call for participation in Working Group via IERS message – IERS Message No. 425 (24 March 2021)
• Q1 2021: first online meeting of the Working Group (6 May 2021)
• Q2 2021: definition of the validation protocol
• Q2 2021: website of EOP PCC online
• – technical document summarizing all the rules and requirements (2 June 2021)
• – open the server for ID applications (7 June 2021)
• – open the server for preliminary submissions of predictions for testing purposes (7 June 2021)
• Q2 2021: open call for participation in pre-operational phase of the 2^nd EOP PCC (3 June 2021)
• Q2 2021: first weekly submission of test EOP predictions (9 June 2021)
• Q3 2021: poster about preparations for the 2^nd EOP PCC presented during the IAG Scientific Assembly (1 July 2021)
• Q3 2021: open call for participation in operational phase of Campaign via IERS message – IERS Message No. 437 (13 July 2021)
• Q3 2021: first weekly submission of EOP predictions (1 September 2021)
• Q4 2021: preliminary results presented during ICCC JWG C.1 Meeting (25 November 2021)
• Q4 2021: call for participation in the 2^nd EOP PCC Workshop No. 1 – IERS Message No. 443 (10 December 2021)
• Q4 2021: poster with campaign overview and first results presented during AGU Fall Meeting (16 December 2021)
• Q1 2022: 2^nd EOP PCC Workshop No. 1 (15-16 February 2022)
• Q2 2022: presentation of preliminary results at EGU General Assembly (25 May 2022)
• Q4 2022: annual summary of the 2^nd EOP PCC presented during REFAG 2022 (18 October 2022)
• Q4 2022: online meeting with Participants and Working Group Members (8 December 2022)
• Q4 2022: poster with initial summary of the course of the 2nd EOP PCC presented during AGU Fall Meeting (13 December 2022)
• Q4 2022: last weekly submission of EOP predictions in operational phase (29 December 2022)
• Q1 2023: call for participation in the 2^nd EOP PCC Workshop No 2. – IERS Message No. 468 (13 January 2023)
• Q1 2023: 2^nd EOP PCC Workshop No. 2 (1-3 March 2023)
• Q1 2023: presentation with campaign results during the 2^nd EOP PCC Workshop No. 2 (1 March 2023)
• Q2 2023: presentation and poster with campaign results presented during EGU General Assembly 2023 (23 April 2023)
• Q2 2023: presentation with campaign summary presented during International Union of Geodesy and Geophysics (IUGG) Assembly 2023 (20 July 2023)
• Q3 2023: presentation and poster with campaign summary presented during Journées 2023 (11 September 2023)
• Q4 2023: publication of all data-sets submitted during the 2^nd EOP PCC (1 December 2023)
• Q1 2024: publication of the paper with assessment of UT1-UTC and LOD predictions in Journal of Geodesy (20 March 2024)
• Q2 2024: online meeting with Participants and Working Group Members (12 June 2024)
• Q3 2024: publication of the paper with assessment of precession-nutation predictions in Earth, Planets and Space (30 July 2024)
• Q4 2024: open call for participation in sub-campaign dedicated machine learning-based approaches – EOP PML – IERS Message No. 508 (29 October 2024)
• Q3 2024: publication of the paper with assessment of PM predictions in Earth and Space Science (5 November 2024)