Topic:  S-NPP Drag Make-Up Maneuver (DMU) scheduled for March 26, 2025

Date/Time Issued: March 24, 2025 1427Z

Product(s) or Data Impacted:  All S-NPP Sensor Data

Date/Time of Initial Impact: March 26, 2025 17:01:00

Date/Time of Expected End: March 26, 2025 19:08:04

Length of Outage:  See Details.

Details/Specifics of Change: On March 26, 2025 at 17:27:00Z, S-NPP will perform a 4.0 second propulsive Drag Make-Up Maneuver (DMU) to maintain the Repeating Ground Track box.
The following observatory systems will be affected on March 26, 2025:
17:01:00Z – 19:08:04z CERES in Contam-Safe mode, science data will not be available
17:11:00Z – 17:38:06z OMPS in Decon mode, Science data will not be available
17:16:00Z – 17:39:05z HRD will be off, data for direct broadcast users will not be available
17:21:00Z – 17:34:04z NPP pointing off-nadir, collected data during that time period may be impacted and not disseminated

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