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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
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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
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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
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