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Latest updates from the IERS, including new messages and bulletins, announcements of meetings and workshops, and further news related to Earth rotation, reference frames, and geophysical fluids.

DateCategoryTitle
22 Jul 2026MessagesIERS Message No. 562: 2024 Survey Report for Yarragadee now available
16 Jul 2026BulletinsIERS Bulletin A (rapid EOP data and predictions) - latest issue
06 Jul 2026BulletinsIERS Bulletin C (leap second announcements) - latest issue
02 Jul 2026MessagesUnexpected IT infrastructure outage resolved - IERS services fully restored
02 Jul 2026MessagesIERS Message No. 561: International GNSS Service Session at AGU26 - Call for Abstracts
02 Jul 2026BulletinsIERS Bulletin B (monthly EOP data) - latest issue
25 Jun 2026MessagesREMINDER: Outage of iers.org servers on June 26/27 2026
23 Jun 2026MessagesIERS Message No. 560: Earth Orientation Parameters Session at AGU26 - Call for Abstracts
22 Jun 2026MessagesIERS Message No. 559: GGOS Session at AGU26 - Call for Abstracts 
16 Jun 2026MessagesIERS Message No. 558: CfP for Genesis IAG/ESA Combination Pilot Project 
12 Jun 2026MessagesIERS Message No. 557: Conclusion of the 2nd EOP PCC and EOP PML Comparison Campaigns
27 May 2026MessagesIERS Message No. 556: Call for EARLY BIRD REGISTRATION - 17th EVN Symposium & Users' Meeting
26 May 2026MessagesIERS Message No. 555: The RING project in Germany: 1 Postdoc and 14 PhD positions
16 Apr 2026MessagesIERS Message No. 554: TIGER Symposium in Geodesy 2026 - Extension of abstract deadline
29 Mar 2026BulletinsIERS Bulletin D (announcements of DUT1) - latest issue
24 Feb 2026MessagesIERS Message No. 552: 2nd EOP Prediction Comparison Campaign Workshop No. 3
13 Feb 2026MessagesIERS Message No. 551: Genesis Session at COSPAR - Abstract deadline extended to 20.02.2026
09 Feb 2026MessagesIERS Message No. 550: Reminder: Genesis Session at COSPAR - Abstract deadline 13.02.2026
04 Feb 2026MessagesIERS Message No. 549: TIGER Symposium in Geodesy 2026 - Call for abstracts
20 Jan 2026MessagesIERS Message No. 548: COSPAR 2026, Panel on Satellite Dynamic events
12 Jan 2026MessagesIERS Message No. 547: Fourth update of the 2020 C04 solution
12 Jan 2026MessagesIERS Message No. 546: Bias in C04 x pole coordinate (April - November 2025)
19 Dec 2025MessagesIERS Message No. 544: EGU 2026: Earth rotation session
19 Dec 2025MessagesIERS Message No. 545: EGU2026 G2.5 "Precise Orbit Determination for Geodesy and Earth Science"
16 Dec 2025MessagesIERS Message No. 543: COSPAR 2026: Genesis Session - Call for Abstracts
02 Dec 2025MessagesIERS Message No. 542: EGU2026-G2.3 "TRF: determination, evaluation and applications"
01 Dec 2025MessagesIERS Message No. 541: Release of DTRF2020-u2023
11 Nov 2025MessagesIERS Message No. 540: Relaunch of the IERS Website (www.iers.org)

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