64th IGS Governing Board Meeting (GB64 Retreat)
2023-07-10 - 2023-07-11 | Potsdam, Germany, Potsdam, Germany
Event: 64th IGS Governing Board Meeting (GB64 Retreat)
Date/Time: 10-11 July 2023
Location: Potsdam, Germany

This is a closed 2-day retreat for the IGS Governing Board.

28th IUGG General Assembly
2023-07-11 - 2023-07-20 | CityCube, Berlin, Germany
Event: 28th IUGG General Assembly
Dates: 11-20 July 2023
Location: Berlin, Germany

The 28th IUGG General Assembly (IUGG2023) will be held from 11 to 20 July 2023 at the CityCube in Berlin, Germany.
To learn more about this event, visit the IUGG 2023 event page.

13th session of the UN-GGIM
2023-08-02 - 2023-08-04 | United Nations Headquarters, New York, NY, United States
Event: 13th session of the United Nations Committee of Experts on Global Geospatial Information Management (UN-GGIM)
Dates: 2-4 August 2023
Location: New York, NY USA

To learn more about this event, visit the 13th session of the UN-GGIM event page.

GGOS Days 2023
2023-09-20 - 2023-09-22 | Yebes Observatory, Guadalajara, Spain
Event: GGOS Days 2023
Dates: September 20-22, 2023
Location: Yebes Observatory in Guadalajara, Spain

The GGOS Days convene yearly all GGOS components to report on their recent activities and to present their plans for the coming year. It includes the two GGOS Bureaus, the GGOS Focus Areas, the GGOS Science Panel, the GGOS Coordinating Office, the GGOS Affiliates as well as GGOS Committees and GGOS Working Groups.
The GGOS Days 2023 will be on September 20-22, 2023 in at the Yebes Observatory in Guadalajara, Spain.
To learn more about this event, visit the GGOS Days 2023 event page.

Seventeenth Meeting of the UN ICG (ICG-17)
2023-10-15 - 2023-10-20 | Hotel Meliá Avenida de América in Madrid, Spain and Online
Event: United Nations International Committee on GNSS (ICG) 16th Meeting
Dates: 15-20 October 2023
Location: Hybrid (Hotel Meliá Avenida de América in Madrid, Spain and Online)

The Seventeenth Meeting of the International Committee on Global Navigation Satellite Systems (ICG), organized by the European Union in collaboration with the Spanish Presidency of the European Union, Madrid, Spain, will be held in hybrid format on 15 – 20 October 2023.
To learn more about this event, visit the 17th Meeting of the International Committee on Global Navigation Satellite Systems (ICG) page.

ISSN 2023
2023-11-20 - 2023-11-22 | Jiaozuo, Henan, China, Jiaozuo, Henan, China
Event: International Symposium on Satellite Navigation: Advances, Opportunities and Challenges (ISSN2023)
Dates: 20-22 November 2023
Location: Jiaozuo, Henan, China

The ISSN2023 aims to provide a platform for GNSS scientists and engineers to communicate and exchange in theory, methods, technologies, applications and future challenges. The ISSN2023 is open to all scientists who may have the latest results and developments in BDS/GNSS+, including constellations, signals, orbit, receiver, positioning/navigation/timing theory, algorithms, models and applications in engineering and Earth science as well as combining multi-sensors. Manuscripts on new advances in Multi-GNSS and other regional systems, compatibility, interoperability and new applications are also welcomed.
To learn more about this event, visit the ISSN 2023 event page.

65th IGS Governing Board Meeting
2023-11-30 21:00 - 23:00 UTC | Online Event
Event: 65th IGS Governing Board Meeting
Date/Time: 30 November 2023, 2100 to 2300 UTC
Location: Online

This is a closed meeting for the IGS Governing Board.

AGU Fall Meeting 2023
2023-12-11 - 2023-12-15 | San Francisco, CA, USA, San Francisco, CA, United States
Event: AGU Fall Meeting
Dates: 11-15 December 2023
Location: San Francisco, CA, USA

To learn more about this event, visit the AGU 2023 Fall Meeting event page.

EGU General Assembly
2024-04-14 - 2024-04-19 | Austria Center Vienna (ACV), Vienna, Austria
Event: EGU General Assembly
Dates: April 14-19, 2024
Location: Vienna, Austria & Online

The EGU General Assembly 2024 brings together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary, and space sciences. The EGU aims to provide a forum where scientists, especially early career researchers, can present their work and discuss their ideas with experts in all fields of geoscience.
To learn more about this event, visit the EGU website.

UN Workshop on Applications of GNSS
2024-04-14 - 2024-04-19 | WA
Event: United Nations/Philippines Workshop on the Application of Global Navigation Satellite Systems
Dates: April 22-26, 2024
Location: Manila, Philippines

To address a wide array of GNSS applications for socioeconomic benefits and to focus on initiating pilot projects and strengthening the networking of GNSS-related institutions in the region, a Workshop on the Applications of GNSS will be held in Manila from 22 to 26 April 2024.
To learn more about this event, visit the UN workshop website.

FIG Reference Frames in Practice Workshop
2024-05-18 - 2024-05-19 | La Palm Royal Beach Hotel, 1 Labadi Road, Accra, Ghana
Event: FIG Reference Frames in Practice Workshop
Dates: May 18-19, 2024
Location: Accra, Ghana

The main focus is on reference frames in general with a specific focus on UN initiatives, global and regional frames as well selected national case studies
To learn more about this event, visit the FIG website.

GGOS Bureau Networks + Observation
2024-04-14 13:00 - 2024-04-16 15:00 | TU Vienna – Freihaus, Wiedner Hauptstraße 8-10, Vienna, 1040, Austria
Event: GGOS Bureau Networks + Observation
Dates: April 14, 2024
Location: Vienna, Austria

The Sunday before the EGU week – April 14, 2024 – GGOS will host the Bureau of Networks and Obervation (in addition to two other meetings) as an in-person GGOS splinter meetings in Vienna at the TU Wien Freihaus (Wiedner Hauptstraße 8-10). A virtual attendance will be possible, but personal participation is desirable.
To learn more about this event, visit the GGOS Governing Board Bureau event page.

FIG Working Week
2024-05-19 - 2024-05-24 | La Palm Royal Beach Hotel, 1 Labadi Road, Accra, Ghana
Event: FIG Working Week
Dates: May 19-24, 2024
Location: Accra, Ghana

FIG Working Week is no ordinary conference; it is a week-long celebration of innovation and collaboration that unites the global community of surveying and spatial professionals. Here, you will have the unique opportunity to bridge the gap between science and the policymakers and stakeholders who drive real-world change.
To learn more about this event, visit the FIG website.

Japan Geoscience Union Meeting
2024-05-26 - 2024-05-31 | Makuhari Messe, 2 Chome-1 Nakase, Mihama Ward,, Chiba, 261-8550, Japan
Event: FIG Working Week
Dates: May 26-31, 2024
Location: Chiba, Japan

JpGU Meeting 2024 will be held in a hybrid format, with both in-person meetings at Makuhari Messe in Chiba and online meetings. We welcome proposals for sessions from a wide range of research fields
To learn more about this event, visit the JPGU website.

IGS 2024 Workshop
2024-07-01 - 2024-07-05 | Bern, Switzerland
Event: IGS 2024 Workshop
Location: University of Bern in Bern, Switzerland
Dates: 1-5 July 2024
On behalf of the IGS Workshop Local and Scientific Organizing Committees, and together with the IGS Central Bureau, we are pleased to announce that the next IGS Symposium and Workshop will take place from 1 to 5 July 2024, at the Astronomical Institute of the University of Bern, in Bern, Switzerland.
This in-person event will take place in two parts:

1-4 July: a technical Symposium with plenary and poster presentations
4-5 July: a Workshop consisting of topical working meetings

Please check our IGS 2024 Workshop event page periodically for additional event updates.

2024 IGS Workshop Presentations and Future Workshops
2024-09-12 | WA
We are happy to announce that the recordings of the IGS 2024 Symposium
presentations, as well as links to slides and posters, are now available on
the IGS website at https://igs.org/workshop/2024/!

The full Symposium playlist is also available on the IGS YouTube channel:
https://www.youtube.com/playlist?list=PL7mxFN-wm-6ZCdguzhdM1TED8gsklgjqv.

We are looking forward to seeing you at the IGS Symposium and Workshop in
Santiago de Chile in 2026, which will be our first-ever event in South
America! More information about this event will be announced on the IGS
website early next year.

The Call to Host the 2028 IGS Symposium and Workshop is open, and we
welcome proposals from our colleagues around the world; please contact the
IGS Central Bureau at cb at igs.org for more information.

Finally, if you are active on LinkedIn, we encourage you to follow our IGS
LinkedIn page (https://www.linkedin.com/company/igsorg/).

18th Meeting of the UN ICG (ICG-18)
2024-10-06 - 2024-10-11 | Wellington, New Zealand

GGOS Days 2024
2024-10-07 - 2024-10-09 | Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, 14473, Potsdam, Germany
Event: GGOS Days 2024
Dates: October 7-11, 2024
Location: Potsdam, Germany

The GGOS Days convene yearly all GGOS components to report on their recent activities and to present their plans for the coming year. It includes the two GGOS Bureaus, the GGOS Focus Areas, the GGOS Science Panel, the GGOS Coordinating Office, the GGOS Affiliates as well as GGOS Committees and GGOS Working Groups.
The GGOS Days 2024 will be on October 7-11, 2024 in Potsdam, Germany.
To learn more about this event, visit the GGOS Days 2024 event page.

SIRGAS 2024 Symposium
2024-11-18 - 2024-11-22 | Bogotá, Bogotá, Colombia

Robust Orbit Combination Software
2024-11-22 | WA
Geoscience Australia is proud to announce the release of the Robust Orbit Combination Software (ROCS) as open source!

The software is designed to support the International GNSS Service (IGS) and is another step towards realizing a fully multi-GNSS IGS. ROCS combines multi-GNSS orbit products using a robust algorithm and allows several weighting algorithms.

Please feel free to explore the software and provide your feedback either via the GitHub page or by contacting acc at igs.org. You may also contribute to the software via the same communication channels.

Open Governing Board Meeting
2024-12-03 21:00 - 23:00 | Online Event
Save the date!
We are happy to announce that the (first half of the) end-of-year Meeting of the IGS Governing Board will be open to Associate Members.
The meeting will take place online.
The participation link and agenda will be sent to Associate Members mid-November. Please be sure to apply to become an Associate Member ahead of time by visiting https://igs.org/am/.
This meeting is open to all IGS AMs, GB members, and Former GB Members. Participants who are new to the IGS are especially welcome. The intention is for our AMs and community to gather to discuss ideas, and learn about the IGS and its Components.

AGU Annual Meeting 2024
2024-12-09 - 2024-12-14 | Washingon, D.C.
The IGS session is G012 – Multi-GNSS Integration within the International GNSS Service (IGS): Scientific and Societal Benefits. Other related sessions include:

G014 – Precise Orbit Determination: an essential discipline enabling Earth Science
G018 – Reference Frames: Determination, Usage, and Application

Switch to IGb20 Reference Frame
2025-02-02 | WA
As announced in IGSMAIL-8542, a first update of ITRF2020 called ITRF2020-u2023 was released last week. The IGS intends to adopt this update, in the form of a new IGS reference frame called IGb20, for the alignment of its products, starting with the products of GPS week 2352 (2 February 2025).

IGb20 is a simple extract from ITRF2020-u2023. It includes reference coordinates for 343 stable, well-performing, operational and historical IGS stations. The same 332 stations as in the current IGS reference frame, IGS20, were retained. 11 new stations were added in areas currently sparsely covered by IGS reference frame stations.

The IGb20 files are available for download at ftp://igs-rf.ign.fr/pub/IGb20:
– IGb20.snx.gz : IGb20 SINEX file (gzip compressed)
– IGb20.ssc : IGb20 SINEX file without covariance matrix
– psd_IGb20.snx : post-seismic deformation models to be used with IGb20
– soln_IGb20.snx : discontinuity list to be used with IGb20
– IGb20_core.txt : list of “core” stations recommended for the alignment of global solutions to IGb20

Since ITRF2020-u2023 is aligned in origin, scale and orientation to ITRF2020, IGb20 should not be considered as a complete new reference frame, but rather as an update to individual IGS20 station coordinates. This alignment implies that the transformation parameters between ITRF2020 (IGS20) and ITRF2020-u2023 (IGb20) are all zero. It also implies that the switch from IGS20 to IGb20 will not introduce any significant “datum” change in the IGS products. On the other hand, the precision and accuracy of the alignment of the IGS products to the reference frame will benefit from the adoption of updated reference station coordinates.

More details on the usage of the IGb20 reference frame may be found in the comment section of the SINEX file.

Multi GNSS Asia
2025-03-04 - 2025-03-07 | Duangjitt Resort & Spa, 18 Prachanukroh Rd, Pa Tong, Kathu District, Phuket, Thailand
The 15th Multi-GNSS Asia Annual Conference

Navigating the Future: Enhancing Connectivity, Sustainability and Safety

FIG Working Week
2025-04-06 - 2025-04-10 | Brisbane Convention & Exhibition Centre, Merivale St, South Brisbane, QLD, 4101, Australia
FIG and Geospatial Council of Australia have the honour to invite you to the FIG Working Week 2025 being held from 6-10 April 2025 at the Brisbane Convention & Exhibition Centre (BCEC), Australia.

Conference days: 7-9 April
FIG General Assembly: 6 and 10 April
Pre-events/tours: 4-5 April

The Geospatial Council of Australia is the professional body representing surveying and spatial professionals in Australia. We look forward to hosting the FIG Working Week in 2025.

EGU General Assembly
2025-04-27 - 2025-05-02 | Austria Center Vienna (ACV), Vienna, Austria
The EGU General Assembly 2025 brings together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary, and space sciences. The EGU aims to provide a forum where scientists, especially early career researchers, can present their work and discuss their ideas with experts in all fields of geoscience.
To learn more about this event, visit the EGU website.

Tour de l'IGS 7th Stop: Spotlight on Africa
2025-06-04 12:00 - 15:20 | Virtual
What is the Tour of the l’IGS?
The Tour de l’IGS is a series of virtual workshops on relevant topics to the IGS membership, stakeholders and GNSS community in general. These events will be hosted several times a year and will cover a wide range of topics including space-borne and ground-based instrumentation, technology development, scientific and societal applications, etc.
This 7th stop will inform attendees on showcasing African-led research research and innovation in GNSS science and geodesy

Where is the event?
Event is conducted virtually, in an around-the-world clock format. The next stop will take place 04 June 2025 from 1200-1500 UTC. To save this event to your calendar, please use the calendar links from your registration confirmation email or use the calendar links below.
More info on agenda and speakers are available on the Tour de l’IGS website.
How do I participate?
Registration is open at https://forms.gle/A5nyo8g9sjUDog3D9. Participants will receive the meeting link upon completion of the registration. By participating in this workshop, participants agree to follow the IGS Virtual Workshop Code of Conduct.

IAU Symposium 401
2025-08-04 - 2025-08-09 | Edificio Sergio Karakachoff UNLP, C. 48 575, B1900AMW, La Plata, Provincia de Buenos Aires, Argentina
Reference systems and their standardization are of paramount importance to many fields of astronomy. Some examples are the reduction of ground-based observations, space astrometry, astrophysics missions, and space missions to solar system planetary bodies and beyond.
The concept of a reference system and its realization requires the convergence of reference frames, ephemeris, and time scales to be developed respecting associated standards, thus fulfilling one of the IAU strategic goals as the provider of astronomical standards and their use.
The symposium ADVANCING REFERENCE SYSTEMS, EPHEMERIS AND STANDARDS, supported by the INTERNATIONAL ASTRONOMICAL UNION (IAU), will be a forum to discuss the latest results and prospects in this field as well as to facilitate the coordination of common standards across agencies and organizations.
The symposium will be held in a hybrid format at the National University of La Plata (UNLP) in Argentina, August 4-9, 2025, to promote and strengthen the cooperation between the Latin-American region research community and scientists from other parts of the world. It will also provide an opportunity to stimulate the teaching and learning of astronomy among local communities through the planned educational activities.

IAG Scientific Assembly 2025
2025-09-01 - 2025-09-05 | Palacongressi, Rimini, Italy, Via Della Fiera, 23, 47923, Rimini, Rimini, Italy
On behalf of the Department of Physics and Astronomy (DIFA) and the Department of Civil, Chemical, Environmental, and Materials Engineering (DICAM) of the Alma Mater Studiorum – Università di Bologna we would like to invite you to attend the IAG 2025 Scientific Assembly, to be held from 1 to 5 September, 2025, in Rimini, Italy.
The theme of the Assembly is “Geodesy for a changing environment” to be developed within the domains of interest of the four IAG Commissions, namely: Reference Frames, Gravity Field, Rotation and Geodynamics, and Positioning and Applications.
The scientific assembly provides a unique opportunity for the international community to meet, propose and discuss topics where geodetic science plays a considerable role. The theme of the assembly draws geodesists’ attention to impacts of environmental variations/changes, increasingly severe extreme events of different nature and to developing strategies apt to capture the onset of abrupt changes in the Earth system.
We are looking forward to receiving your important contributions and to welcoming you in Rimini for the IAG 2025 Scientific Assembly.

ICG19
2025-10-19 - 2025-10-24 | Paradise Hotel, 296, Haeundaehaebyeon-ro, Haeundae-gu, Busan, 48099, Korea, Democratic People's Republic of
Welcome to the 19th ICG Annual Meeting in Busan, where global experts in GNSS and PNT technologies gather to drive innovation and collaboration. We look forward to meaningful discussions and strengthening international cooperation for the future of our field.
