Topic: S-NPP VIIRS Emissive Band Calibration
Date/Time Issued: February 11, 2021 1320Z
Product(s) or Data Impacted:  All S-NPP VIIRS Emissive Bands
Date/Time of Initial Impact: March 15, 2021 06:00:00z
Date/Time of Expected End: March 17, 2021 04:00:00z
Length of Outage: See Details Specifics of change: On March 15, 2021 at 06:00z, S-NPP VIIRS will perform its annual Emissive Band Calibration. The emissive band data during this time period will be invalid. It will only be valid for calibration purposes. Below is a timeline of the blackbody heating/cooling cycle:
March 15 06:00z - BB to 297.5K
March 15 09:00z - BB to 302.5K
March 15 12:00z - BB to 307.5K
March 15 15:00z - BB to 312.5K
March 15 18:00z - BB to 315K
March 15 21:00z - BB temperature control off
March 16 21:00z - BB temperature control on and set to 272.5K
March 17 00:00z - BB to 282.5K
March 17 03:00z - BB to 292.5K
Contact Information for Further Information: ESPC Operations at and 301-817-3880
Web Site(s) for applicable information: N/A
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