US Government security requirements no longer permit CDDIS to offer data via traditional unencrypted anonymous ftp; this service was discontinued on October 31, 2020. All data are still available, however access must be via HTTPS or ftp-ssl.
Instructions with examples and our FAQ can be found at: https://cddis.nasa.gov/Data_and_Derived_Products/CDDIS_Archive_Access.html.
If you still have difficulty after reading and attempting the examples on that page, please contact us at support-cddis@earthdata.nasa.gov.

Meetings
202020212022Past meetings
2020
- Chapman Conference on Distributed Volcanism and Distributed Volcanic Hazards, Flagstaff, Arizona, USA, March 16 - 20, 2020
- 2020 IVS General Meeting, Annapolis, MD, USA, March 22 – 28, 2020Canceled on March 9, 2020
- The International DORIS Service (IDS)'s "DORIS day", Vienna, Austria, May 2, 2020Canceled
- FIG Working Week 2020, Amsterdam, The Netherlands, May 10-14, 2020Canceled
- IGS 2020 Workshop, UNAVCO/UCAR, Boulder CO, August 10-14, 2020Postponed until early 2021
- 43rd COSPAR Scientific Assembly, Sydney, Australia, August 15-23, 2020Postponed to Jan 28 - Feb 04, 2021
- International Association of Geodesy (IAG): 2nd International Symposium of IAG Commission 4 - 2020, Potsdam, Germany, September 7-11, 2020Postponed to September 5 - 9, 2022
- GGOS Days 2020, October 5 - 7, 2020Will be held as video conference
- First Lunar Laser Ranging Meeting, Saint Vallier de Thiey, France, October 8 - 9, 2020Postponed to 2021
- IDS Workshop, Venice, Italy, October 19-21, 2020Canceled
- ILRS Virtual World Tour 2020, November 2 -6, 2020
- AGU 2020 Fall Meeting, San Francisco, CA, December 7 - 11, 2020, Virtual (mostly) & San Francisco (possibly)
2021
- COSPAR 2021 HYBRID, 43rd Scientific Assembly, Sydney, Australia, Jan 28 - Feb 04, 2021
- EGU General Assembly 2021, Vienna, Austria, April 25 - 30, 2021
- FIG Working Week 2021, Utrecht, Netherlands, June 20 - 24, 2021
- AOGS 18th Annual Meeting, Singapore, August 01-06, 2021
- IGS 2021 Workshop: "Science from Earth to Space", UNAVCO/UCAR, Boulder CO, September 27 - 1 October, 2021
- 22nd International Workshop on Laser Ranging, Kunming, China, October 25-29, 2020
- European Navigation Conference 2021 (ENC 2021), Edinburgh, Scotland, UK, November 15 - 18, 2021
2022
- 44th COSPAR Scientific Assembly, Athens, Greece, July 16-24, 2022
- 2021 ILRS Technical/Specialty Workshop, Arequipa, Peru, Fall, 2022
- International Association of Geodesy (IAG): 2nd International Symposium of IAG Commission 4 - 2020, Potsdam, Germany, September 5 - 9, 2022
