Topic: NOAA-20 VIIRS Non-Roll Lunar Calibration Scheduled for March 28, 2026

Date/Time Issued: March 10, 2026 1857Z

Product(s) or Data Impacted: NOAA-20 VIIRS Data

Date/Time of Initial Impact: March 28, 2026 18:46:09Z

Date/Time of Expected End: March 28, 2026 18:51:15Z

Length of Outage: See Details.

Details/Specifics of change: On March 28, 2026, NOAA-20 VIIRS will perform a Lunar Calibration without a spacecraft roll maneuver, centered at 18:48:42Z. Only VIIRS science data will be impacted while VIIRS encoder offset and gain are set for Moon observation.

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