NOAA-20 VIIRS Lunar Calibration Roll Maneuver Scheduled for December 01, 2025
12/1/25
6:31
7:33
V
ESPC Operations Notice
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On December 01, 2025, NOAA-20 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration. Science data may be impacted while the spacecraft is pointing off-nadir during the attitude maneuver and the CERES instrument will not provide nominal science data as it will be placed in a contamination safe mode. The timeline of events for this maneuver are provided below.
The following observatory systems will be affected on December 01, 2025 during the Lunar Roll Activity:
06:31:06z - 07:33:06z CERES will be in Contam-Safe and Standby, science data will not be available
06:46:06z - 07:08:06z HRD will be off, data for direct broadcast users will be unavailable
06:50:34z - 07:03:38z VIIRS encoder offset and gain will be set for Moon observation
06:51:06Z - 07:03:06z NOAA-20 will be pointing off-nadir, collected data may be impacted and not disseminated