Topic: S-NPP Drag Make-Up Maneuver (DMU) 045 Scheduled for November 19, 2025
Date/Time Issued: November 17, 2025 2041Z
Product(s) or Data Impacted: All S-NPP Sensor Data
Date/Time of Initial Impact: November 19, 2025 17:36:00Z
Date/Time of Expected End: November 19, 2025 19:43:04Z
Length of Outage: See Details.
Details/Specifics: On November 19, 2025 18:02:00Z, S-NPP will perform a 3.0 second propulsive Drag Make-Up Maneuver (DMU) to maintain the repeating Ground Track box.
The following observatory systems will be affected on November 19, 2025:
17:36:00z – 19:43:04z: CERES in Contam-Safe mode, science data will not be available
17:46:00z – 18:13:06z: OMPS in Decon mode, Science data will not be available
17:51:00z – 18:14:05z: HRD will be off, data for direct broadcast users will not be available
17:56:00z – 18:02:03z: S-NPP in Control Frame 2 (DMU) (Delta-V Control Frame)
17:56:00z – 18:09:04z: S-NPP pointing off-nadir, collected data during that time period may be impacted and not disseminated
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