What does STDN stand for?

Satellite Tracking and Data Acquisition Network (SAUS)

Set the Date Now - Association supporting the end of US military involvement in Indochina - Defunct (EA)

Spacecraft Tracking and Data Network (NITA)

Spaceflight Tracing and Data Network (SAUS)

Space Flight Tracking and Data Network - Formerly, STADAN - NASA

Spaceflight Tracking and Data Network (SAUS)

Space Tracking and Data Network - NASA (NAKS)

Standardization (AFM)