Topic:M-B NOAA-20 Drag Make-Up (DMU) maneuver scheduled for December 18, 2019

Date/Time Issued: December 18, 2019 1133Z

Product(s) or Data Impacted:M-B All NOAA-20 Sensor Data

Date/Time of Initial Impact: December 18, 2019M-B 1556Z

Date/Time of Expected End: December 18, 2019M-B 1803Z

Length of Outage:M-B See Details.

Details/Specifics of Change: On December 18, 2019 at 16:22:00Z, NOAA-20 (JPSS-1) will perform a 1.0 second propulsive Drag Make-Up (DMU) maneuver to maintain the Repeating Ground Track box.

The following observatory systems will be affected on December 18, 2019. The times below are as planned, but actual on-orbit execution times may be offset by 3-7 seconds.

15:56:00Z M-bM-^@M-^S 18:03:40ZM-BM-B CERES in Contam-Safe mode, science data will not be available

16:06:00Z M-bM-^@M-^S 16:32:10ZM-BM-BM-B OMPS in Decon mode, Science data will not be available

16:11:00Z M-bM-^@M-^S 16:34:10ZM-B HRD will be off, data for direct broadcast users will be unavailable

16:16:00Z M-bM-^@M-^S 16:29:10ZM-B NOAA-20 pointing off-nadir, collected data during that time period may be impacted and not disseminated.

Contact Information for Further Information:M-BM-BESPC Operations at and 301-817-3880. M-BM-BM-B

Web Site(s) for applicable information: N/A

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