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DTSTART;VALUE=DATE:20260914
DTEND;VALUE=DATE:20260919
DTSTAMP:20260224T113135Z
CREATED:20260224T113135Z
LAST-MODIFIED:20260224T113135Z
UID:33435-1789344000-1789775999@geodesy.science
SUMMARY:17th European VLBI Network Symposium
DESCRIPTION:The European VLBI Network Symposium is the main forum for discussion of the latest Very Long Baseline Interferometry scientific results and technical and technological developments within the EVN member countries. The purpose of this biennal meeting is to bring together the global VLBI community to exchange knowledge\, share new research\, discuss advancements in VLBI techniques\, and foster a collaborative community in radio astronomy. This year\, for the first time\, there will be a dedicated session on geodetic and astrometric VLBI.
URL:https://geodesy.science/event/17th-european-vlbi-network-symposium/
LOCATION:The University of Manchester\, Manchester\, United Kingdom
CATEGORIES:IAU,IVS
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/EVN2026-WebBanner_Copyright-LOCEVN2026_2026-02-23_2f3e89-e1771932627221.png
ORGANIZER;CN="European VLBI Network":MAILTO:evn-symposium.2026@manchester.ac.uk
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20260914T120000
DTEND;TZID=UTC:20260916T130000
DTSTAMP:20260720T055819Z
CREATED:20260127T071606Z
LAST-MODIFIED:20260720T055819Z
UID:32840-1789387200-1789563600@geodesy.science
SUMMARY:ITGRF Workshop 2026
DESCRIPTION:The 2026 ITGRF workshop will provide an excellent opportunity to advance the International Terrestrial Gravity Reference Frame and to discuss current activities within the IAG Joint Working Group 2.1.1. The workshop will focus on ensuring the compatibility of absolute gravity observations\, establishing and maintaining gravity reference stations\, and developing a modern\, user-oriented infrastructure for end-users. It will bring together experts in absolute gravimetry\, gravity monitoring\, and reference frame realization to exchange knowledge and coordinate future work. \nThe International Terrestrial Gravity Reference Frame (ITGRF) is developed by the International Association of Geodesy and is based on accurate observations from absolute gravimeters and continuous gravity monitoring at reference stations. Its primary objective is to replace the obsolete International Gravity Reference Standardization Network (IGSN71) defined in the early 1970s with a modern\, consistent global gravity reference. \nThe workshop will be hosted in 2026 by the British Geological Survey’s Space Geodesy Facility at Herstmonceux Castle in East Sussex\, a site with a strong scientific heritage as the former home of the Royal Greenwich Observatory. \n\nBooking/registration information is available under: https://www.eventbrite.co.uk/e/the-iag-jwg-211-workshop-for-the-development-of-the-itgrf-tickets-1986065996860\nThe Session plan is available here: https://share.bkg.bund.de/x/HoCpBw\nMore info here [PDF]
URL:https://geodesy.science/event/second-itgrf-workshop/
LOCATION:Herstmonceux Castle\, Hailsham\, East Sussex\, United Kingdom\,
CATEGORIES:BGI,Commission 2,IGFS
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/ITGRF_workshop_2026-1-e1769498104146.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20260915
DTEND;VALUE=DATE:20260917
DTSTAMP:20260317T065349Z
CREATED:20251016T042446Z
LAST-MODIFIED:20260317T065349Z
UID:30777-1789430400-1789603199@geodesy.science
SUMMARY:VieVS Days 2026
DESCRIPTION:The two-day workshop will cover the basics of analysing VLBI geodetic data\, simulations and scheduling. Participants will have the opportunity to apply their learning through hands-on exercises utilising VieVS & VieSched++. \nThe workshop is aimed at PhD students and newcomers to the field of geodetic VLBI analysis. The registration is offered on a first-come\, first-served basis. The number of participants is limited. \nMore info and registration here: https://vievswiki.geo.tuwien.ac.at/Webinar/VieVSWorkshop2026 \n 
URL:https://geodesy.science/event/vievs-days-2026/
LOCATION:TU Wien\, Vienna\, Austria
CATEGORIES:IVS,📚 Education & Training
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/vievs_white_Copyright-ViennaCenterforVLBI_2025-10-15_e18edd.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Vienna:20261005T083000
DTEND;TZID=Europe/Vienna:20261007T173000
DTSTAMP:20260414T053707Z
CREATED:20260414T052135Z
LAST-MODIFIED:20260414T053707Z
UID:35368-1791189000-1791394200@geodesy.science
SUMMARY:GGOS Days 2026
DESCRIPTION:
URL:https://geodesy.science/event/ggos-days-2026/
LOCATION:Lantmäteriet\, Lantmäterigatan 2C\, Gävle\, 802 64\, Sweden
CATEGORIES:GGOS,IAG Services
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/GGOSDays2026-scaled.png
ORGANIZER;CN="GGOS Coordinating Office":MAILTO:co@ggos.org
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261007
DTEND;VALUE=DATE:20261010
DTSTAMP:20260423T103027Z
CREATED:20260423T103027Z
LAST-MODIFIED:20260423T103027Z
UID:35616-1791331200-1791590399@geodesy.science
SUMMARY:ESA 10th International Colloquium on GNSS
DESCRIPTION:The topics of the conference include:\no   Time and Frequency Principles and Novel Clock Technologies\no   Scientific Aspects of Positioning and Navigation Applications\no   Reference Frames and Precise Orbit Determination\no   Navigation for Lunar and for Space Applications\no   Scientific Opportunities enabled by GNSS and PNT systems\no   Geodesy\, Geophysics and Earth Sciences\no   Fundamental Physics\no   GNSS Remote Sensing\, Reflectometry and Atmosphere Sounding\no   Optical and Quantum Principles and Technologies for PNT\n\nThe abstract submission has been extended to 8 May\, 2026. The selected papers will be published in Advances in Space Research.\n\nSee the website for details:\nhttps://atpi.eventsair.com/10th-gnss-science-colloquium/
URL:https://geodesy.science/event/esa-10th-international-colloquium-on-gnss/
LOCATION:École de technologie supérieure (ETS) of Quebec\, Montreal\, Canada
CATEGORIES:Commission 1,GGOS,IDS,IERS,IGS,ILRS,IVS
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/7bd4e54f6bbd4e06b82efc5cd1ea9835__1__Copyright-ESA_2026-04-22_efbb15.png
ORGANIZER;CN="European Space Agency (ESA)":MAILTO:esaconferencebureau@atpi.com
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261012
DTEND;VALUE=DATE:20261017
DTSTAMP:20260709T073443Z
CREATED:20250908T133915Z
LAST-MODIFIED:20260709T073443Z
UID:29332-1791763200-1792195199@geodesy.science
SUMMARY:Gravity Geoid and Height Systems Symposium (GGHS2026)
DESCRIPTION:The Gravity\, Geoid and Height Systems Symposium (GGHS) is a leading international meeting organized under the International Association of Geodesy (IAG). It brings together experts\, researchers\, and students to discuss the latest developments in gravity field modeling\, geoid determination\, height systems\, and their applications in Earth sciences and society. \nThe next edition\, GGHS2026\, will continue this tradition by providing a forum for exchanging ideas\, presenting new research\, and fostering collaboration across the global geodetic community. \n\nOfficial website: https://www.gghs2026.com/ \n\n\nGGHS 2026 Pamphlet [PDF]
URL:https://geodesy.science/event/gravity-geoid-and-height-systems-symposium-gghs2026/
LOCATION:Indian National Science Academy\, New Delhi\, India
CATEGORIES:Commission 2,GGOS,IGFS
ATTACH;FMTTYPE=image/jpeg:https://geodesy.science/wp-content/uploads/geoid-c2_edit.jpg
ORGANIZER;CN="Dr. Virendra Tiwari":MAILTO:virendra.m.tiwari@gmail.com
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261013
DTEND;VALUE=DATE:20261016
DTSTAMP:20260803T073036Z
CREATED:20260803T073036Z
LAST-MODIFIED:20260803T073036Z
UID:37833-1791849600-1792108799@geodesy.science
SUMMARY:GRACE/GRACE-FO Science Team Meeting 2026
DESCRIPTION:Yearly meeting addressing satellite gravimetry (data processing & applications)\, in particular related to the GRACE satellite missions\, but also including planned missions such as NGGM/MAGIC or other future mission concepts. \nOverview on planned sessions: \nA. GRACE and GRACE-FO Geodesy:\nA.1 GRACE-FO Project Status\, A.2 Analysis Techniques & Inter-comparisons\, A.3 GRACE-C\, NGGM\, and Future Missions\, A.4 The Mean Earth Gravity Field \nB. Geophysics & Climate Science Applications:\nB.1 Solid Earth Sciences\, B.2 Cryosphere\, B.3 Oceanography\, B.4 Hydrology\, B.5 Multidisciplinary Science\, B.6 Towards the Operational Use of Satellite Gravimetry \nFurther details are provided at the meeting website.
URL:https://geodesy.science/event/grace-grace-fo-science-team-meeting-2026/
LOCATION:GFZ Helmholtz Centre for Geosciences in Potsdam\,\, Potsdam\, Germany
CATEGORIES:Commission 2,ICCC,ICGEM,IGFS,Projet QuGe
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/GRACE_NASA__1__Copyright-aei.mpg.de_2025-09-15.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261101
DTEND;VALUE=DATE:20261107
DTSTAMP:20260804T044720Z
CREATED:20260804T044430Z
LAST-MODIFIED:20260804T044720Z
UID:37857-1793491200-1794009599@geodesy.science
SUMMARY:24th International Workshop on Laser Ranging
DESCRIPTION:The 24th International Workshop on Laser Ranging will take place in Buenos Aires from the 1st to 6th of November 2026. The conference venue is the Rectoría (rectorate building) de la Universidad Tecnológica Nacional (UTN)\, Sarmiento 440\, Buenos Aires. \nEvent Website: https://bkg.bund.de/en/bkg/events/ilrs-workshop
URL:https://geodesy.science/event/24th-international-workshop-on-laser-ranging/
LOCATION:Rectoria de la Universidad Tecnologica Nacional (UTN)\, Sarmiento 440\, Buenos Aires\, C1041AAJ\, Argentina
CATEGORIES:AGU,Commission 1,Commission 2,Commission 3,Commission 4,EGU,GGOS,IAG Services,ILRS,IUGG
ATTACH;FMTTYPE=image/webp:https://geodesy.science/wp-content/uploads/ilrs-workshop-2026.webp
ORGANIZER;CN="BKG%2C AGGO":MAILTO:kompetenzzentrum-gow@bkg.bund.de
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20261109
DTEND;VALUE=DATE:20261114
DTSTAMP:20260806T081359Z
CREATED:20260806T055533Z
LAST-MODIFIED:20260806T081359Z
UID:38197-1794182400-1794614399@geodesy.science
SUMMARY:SIRGAS School
DESCRIPTION:9th SIRGAS School on “Reference Systems and Reference Frames”.  \nThe School will be offered in a hybrid format: \n\nthe theoretical component will be delivered online\, From October 19 to 30.\nthe practical component will take place in person at the Faculty of Engineering of the University of the Republic (Universidad de la República)\, Montevideo\, Uruguay. From November 9 to 13.\n\n\nIdentify the metadata required for processing GNSS and gravimetric data. \nUnderstand the details of GNSS and gravimetric data processing. \nSet up a GAMIT/BERNESE processing workflow using their own data. \nUse GLOBK/BERNESE to perform daily and weekly combinations. \nDensify IGS20 using the provided sample data. \nPlan gravimetric measurement campaigns. \nProcess gravimeter readings into mGal units and apply the necessary corrections to the observations. \nProcess\, adjust\, and predict gravimetric observations. \nCompute and interpret gravity anomalies. \n\n\n\n\n\n\n\nInstructors:  \n\n\n\n\n\n\n\n\n\n\n\n\n\nProf. Dr. Gabriel Guimarães (Universidade Federal de Uberândia\, Brazil)  \nProf. Dr. Demián Gomez (Ohio State University\, Earth Sciences\, USA) \nProf. José Tarrío Mosquera (Universidad Santiago de Chile\, Chile) \nDr. Walter Subiza (Instituto Geográfico Militar\, Uruguay) \nDr. Ezequiel Antokoletz (Agencia Federal para la Cartografía y Geodesia – BKG\, Alemania)\n\n\n\n\n\n\n\n\nOrganized by: \n\n\n\n\n\n\n\n\n\n\n\n\n\nSIRGAS – Sistema de Referencia Geodésico para las Américas  \nInstituto Geográfico Militar de Uruguay \nFacultad de Ingeniería de la Universidad de la República    \n\n\n\n\n\n\n\n\n\n\n\n\n\nContact: sirgasipgh@gmail.com 
URL:https://geodesy.science/event/sirgas-school/
LOCATION:Faculty of Engineering of the University of the Republic\, Av. Julio Herrera y Reissig 574-592\, Montevideo\, Departamento de Montevideo\, Montevideo\, 11300\, Uruguay
CATEGORIES:BGI,Commission 1,Commission 2,FIG,IGFS,IGS,UN (United Nations)
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/ESCUELA-INGLES_Copyright-SIRGAS_2026-08-05_ZEozpN5isYSd.png
ORGANIZER;CN="Gustavo Caubarr%C3%A8re":MAILTO:sirgasipgh@gmail.com
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20270118
DTEND;VALUE=DATE:20270123
DTSTAMP:20260529T065931Z
CREATED:20260529T065847Z
LAST-MODIFIED:20260529T065931Z
UID:36606-1800230400-1800662399@geodesy.science
SUMMARY:IAU Symposium 2027
DESCRIPTION:January 18th – January 22nd\, 2027 in Windhoek\, Namibia \nRelativistic jets from active galactic nuclei are among the Universe’s most extreme particle accelerators. Blazars\, with jets pointed toward Earth\, show dramatic multiwavelength variability and gamma-ray flares\, offering unique insights into particle acceleration\, jet dynamics\, and magnetic field structure. Yet key processes\, such as jet formation\, the location of high-energy emission\, and the mechanisms driving flares\, remain poorly understood. This symposium brings together theorists\, observers\, and instrument scientists to address these challenges\, focusing on universal jet physics across systems\, including jet launching and collimation\, particle acceleration\, magnetic-field evolution\, multi-band flaring and polarisation signatures\, and multimessenger links involving neutrinos. Comparative insights from other jetted sources\, such as GRBs\, TDEs\, and Galactic accreting systems\, will broaden the scientific perspective. Building on the progress surrounding the African Millimetre Telescope in Namibia and the continued success of H.E.S.S.\, MAGIC\, VERITAS\, MeerKAT\, EHT\, SALT\, and Fermi\, and the upcoming SKA\, Vera C. Rubin Observatory\, CTAO\, and ASTRI Mini-Array\, this meeting will advance multimessenger studies\, foster international collaboration\, and engage early-career researchers and the growing African astronomy community. \nThe IAUS 413 will focus on recent studies in these fields and potential future prospects and synergies among them. During this meeting\, the topics we will discuss include: \n\nUniversal dynamics & modelling: Identify fundamental processes of jet formation\, composition\, and acceleration across AGN\, GRBs\, and XRBs by employing advanced RMHD and PIC simulations to unify observed universal jet behaviours.\nEmission & localisation: Characterise high-energy emission zones within relativistic outflows by analysing jet structure and magnetic-field evolution across diverse accretion and power regimes\, from Galactic sources to the most distant quasars.\nMultimessenger synergy: Evaluate the physical connections between flaring activity\, neutrino production\, and candidate multimessenger sources to build integrated theoretical frameworks for jet phenomena across all mass scales.\nPolarimetry & variability: Utilise multi-band flares\, multiwavelength variability\, and polarisation signatures as high-fidelity probes to decode internal jet physics and particle acceleration mechanisms in X-ray Binaries and AGN.\nComparative astrophysics & scaling laws: Conduct cross-system studies (TDEs\, AGN\, and Galactic XRBs) to determine if particle acceleration and energy dissipation mechanisms are truly scale-invariant or fundamentally altered by the local environment.\n\nDetails\nThe 2027 IAUS413 will be held between January 18th – 22nd\, 2027\, in Windhoek\, Namibia\, making it the 5th African country ever to host such an event. The abstract submission/travel grant application deadline is July 15th and the registration deadline August 15th 2026. For more information\, contact the organisers via gfpara@utu.fi \nWebsite\nhttps://www.unam.edu.na/iau2027
URL:https://geodesy.science/event/iau-symposium-2027/
LOCATION:Windhoek\, Namibia\, Balderichgasse 31/24\, Windhoek\, 1170\, Namibia
CATEGORIES:IAU,IVS
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/iau_symposium_413-1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20270524
DTEND;VALUE=DATE:20270527
DTSTAMP:20260617T092053Z
CREATED:20260617T092053Z
LAST-MODIFIED:20260617T092053Z
UID:36950-1811116800-1811375999@geodesy.science
SUMMARY:NGGM Science and Applications Workshop 2027
DESCRIPTION:
URL:https://geodesy.science/event/nggm-science-and-applications-workshop-2027/
LOCATION:TBD\, Gruttosingel 20\, Carcassonne\, 2496HW\, France
CATEGORIES:AGU,BGI,Commission 2,Commission 3,COSPAR,EGU,FIG,GGOS,IACS,IAGA,IAHS,IAMAS,IAPSO,IASPEI,IAU,IAVCEI,ICCC,ICGEM,IGFS,ISG,IUGG,Projet QuGe,UN (United Nations)
ATTACH;FMTTYPE=image/png:https://geodesy.science/wp-content/uploads/NGGM_Workshop_2027_Copyright-EuropeanSpaceAgency_2026-06-17_cda9f0.png
ORGANIZER;CN="European Space Agency":MAILTO:ilias.daras@esa.int
END:VEVENT
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