Topic: NOAA-21 VIIRS Non-Roll Lunar Calibration Roll Scheduled for June 06, 2025

Date/Time Issued: June 04, 2025 1353Z

Product(s) or Data Impacted: NOAA-21 VIIRS Data

Date/Time of Initial Impact: June 06, 2025 10:20:27Z

Date/Time of Expected End: June 06, 2025 10:25:33Z

Length of Outage: See Details.

Details/Specifics of change: On June 06, 2025, NOAA-21 VIIRS will perform a Lunar Calibration without a spacecraft roll maneuver, centered at 10:23:00Z. Only VIIRS science data will be impacted while VIIRS encoder offset and gain are set for Moon observation.

This message was sent by ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.