Topic: Declaring the NOAA-21 Satellite Operational  

Date/Time Issued: March 30, 2023 2200 UTC

Product(s) or Data Impacted:  None

Date/Time of Initial Impact: March 30, 2023

Date/Time of Expected End: N/A

Length of Outage: N/A

Details/Specifics of Change:

The NOAA-21 Satellite will be declared Operational on March 30, 2023 at 2200 UTC.

The calibration and validation (cal/val) activities on NOAA-21 are still ongoing, but satellite command and control is under OSPO operations.

NOAA-21 is the Tertiary satellite in the 1325 Local Time of Ascending Node (LTAN) (PM) orbit. As the cal/val activities progress, NOAA-21 will be promoted in priority to Secondary and then eventually as the Primary PM satellite.

Other messages to the community will be sent regarding operational product availability as those product provisional milestones occur.

Contact Information: For information please contact or ESPC Operations at

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