Topic:  NPP Drag Make-Up Maneuver (DMU) scheduled for February 02, 2022

Date/Time Issued: February 02, 2022 1517Z

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

Date/Time of Initial Impact: February 02,2022 17:21:00Z

Date/Time of Expected End: February 02,2022 19:28:04Z

Length of Outage:  See Details.

Details/Specifics of Change: On February 02, 2022 17:47:00Z,

S-NPP will perform a 2.0 second propulsive Inclination Adjustment Maneuver (IAM)

to maintain Mean Local Time of the Ascending Node while controlling Repeating Ground Track box.

The following observatory systems will be affected on February 02, 2022:

17:21:00Z

 – 19:28:04Z  CERES in Contam-Safe mode, science data will not be available

17:33:00Z

 – 17:58:06Z OMPS in Decon mode, Science data will not be available

17:36:00Z

 – 17:59:05Z  - HRD will be off, data for direct broadcast users will be unavailable

17:41:00Z

 – 17:47:02Z NPP in Control Frame 2 (DMU) (Delta-V Control Frame)

17:41:00Z

 – 17:54:04Z S-NPP pointing off-nadir, collected data during that time period may be impacted and not disseminated