On Wednesday, February 4, 2015 at 17:59:59 UTC Suomi-NPP will perform a critical Drag Make-Up (DMU) Maneuver to maintain repeating ground track. The propulsive burn will last 2 seconds.
The following observatory systems will be affected on February 4, 2015:
17:33:59z - 19:41:01z CERES in Contam-Safe mode, science data will not be available
17:43:59z - 18:11:03z OMPS in Decon mode, science data will not be available
17:48:59z - 18:12:02z HRD will be off, data for direct broadcast users will be unavailable
17:53:59z - 18:07:01z S-NPP pointing off nadir and collected data during that time period may be impacted and not disseminated.