Correction: Subject Line: Administrative: NOAA-20 VIIRS Non-Roll Lunar Calibration Scheduled for January 28, 2026- Issued: January 22, 2026 1744Z

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

Date/Time Issued: January 22, 2026 1744Z

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

Date/Time of Initial Impact: January 28, 2026 23:47:35Z (028)

Date/Time of Expected End: January 28, 2026 23:52:41Z (028)

Length of Outage: 5 Minutes

Details/Specifics: On January 28, 2026, NOAA-20 VIIRS will perform a Lunar Calibration without a spacecraft roll maneuver, centered at 23:50:08Z. Only VIIRS science data will be impacted while VIIRS encoder offset and gain are set for Moon observation.

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