Topic: NOAA 21 VIIRS Lunar Calibration Roll Maneuver Scheduled for May 01, 2023

Date/Time Issued: April 28, 2023 1808Z

Product(s) or Data Impacted:  All NOAA 21 Sensor Data

Date/Time of Initial Impact:  May 01, 2023 07:50:09Z

Date/Time of Expected End: May 01, 2023 08:19:44Z

Length of Outage:  See Details.

Details/Specifics of change: 

On May 01, 2023, NOAA-21 will perform a spacecraft attitude maneuver for the VIIRS Lunar Calibration, with a roll of -2.53 degrees centered at 08:06:12Z. Science data may be impacted while the spacecraft is pointing off-nadir during the attitude maneuver.  The timeline of events for this maneuver are provided below.

The following observatory systems will be affected on 2023 May 01:

07:50:40Z – 08:19:43Z VIIRS encoder offset and gain will be set for Moon observation.

07:51:12Z – 08:19:12Z NOAA-21 will be pointing off-nadir, collected data may be impacted and not disseminated.


Contact Information for Further Information: ESPC Operations at at 301-817-3880

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