• XMM Data Analysis Workshop, virtual, 1-3 April 2025. To register your interest and receive the connection info, please fill out the form here by March 18, 2025.
• An extraordinary journey into the Transient Sky: from restless progenitor stars to explosive multi-messenger signals, Padova (Italy), 1-4 April 2025.
• Symposium to celebrate the 25th launch anniversary of XMM-Newton, Baltimore (USA), 19-22 May 2025.  
• Dark Matter 2025: From the Smallest to the Largest Scales, Santander (Spain), 2-5 June 2025.
• 3rd HUBS workshop, Beijing (China), 12-15 June 2025 (Abstract deadline:  07/04/2025).
• X-ray Quasi-Periodic Eruptions and Repeating Nuclear Transients, ESAC (Spain),16-19 June 2025.
• EAS Meeting, Cork (Ireland), 23-27 June 2025 (Abstract deadline: 03/03/2025).
  • Symposium S2: XRISM and friends: the sharpest view of the X-ray Universe Symposium.
• National Astronomy Meeting 2025, Durham (UK), 7-11 July 2025. Sessions of special interest are: Active Galactic Nuclei – from ISCO to CGM and from cosmic dawn to the present day; Ins and Outs of Accretion: The Consequences of Mass Transfer onto Compact Objects; Chandra and XMM-Newton at 25 – Utilising Several Decades of X-ray Observations.        
• Vasto Accretion Meeting 2025, Vasto (Italy), 23 June - 4 July 2025.
• High Energy Phenomena in Relativistic Outflows IX, Rio de Janeiro (Brazil), 4-8 August 2025 (Abstract deadline: 15/05/2025).
• Massive Black Holes across Cosmic Time, Cambridge (UK), 8-12 September 2025.
• Multi-phase, Multi-temperature, and Complex. How Feedback Shapes the Nature of the CGM, Halo Gas, and Galaxies from Galaxy Groups to Clusters, Olbia (Italy), 6-10 October 2025 (Abstract deadline: 30/04/2025).
• Taking Spin Measurements for a Spin: Recent Progress on Black Hole Spin Measurements Across the Electromagnetic and Gravitational Spectrum, Winston-Salem (USA), 25-26 September 2025 (Abstract deadline:  01/07/2025).
• XRISM International Conference 2025, Kyoto (Japan), 20 - 24 October 2025  (Abstract deadline:  04/07/2025).
• Highly accreting supermassive black holes across all cosmic times: from the local Universe to cosmic dawn, Santiago de Chile (Chile), 1-5 December 2025.

Notice that this list is not meant to be all-inclusive. Updates, corrections, or meeting suggestions should be sent to the ACO.