Earthdata login will be performing a 1-hour test on Friday, October 6, between 10:30am – 12pm EDT (14:30 – 16:00 UTC). Logins should not be affected if you have logged into your Earthdata account in the past year. If you have any issues logging in outside of this time period, please send a help request to support-cddis@earthdata.nasa.gov.

The CDDIS archives and distributes mainly Global Navigation Satellite System (GNSS), laser ranging (both to artificial satellites, SLR, and the moon, LLR, Very Long Baseline Interferometry (VLBI), and Doppler Orbitography and Radio-positioning Integrated by Satellite (DORIS) data for an ever increasing user community of geophysicists. CDDIS data and derived products are accessible at https://cddis.nasa.gov/archive and via other methods.
