Correction: change to the times UTC vs. "UT" and "Z".  

Topic: NPP/OMPS special DIAG SCIENCE measurements

Date/Time Issued: Jan. 27, 2026 2012 UTC

Product or Data Impacted: Routine NomOps dayside measurement (CBM) activities will be replaced with DIAG SCIENCE
activities on six (6) orbits spread across 3 days, that is, specifically, 2 orbits per day.

Date/Time of Initial Impact: Feb. 9, 2026, 0040 UTC

Date/Time of Expected End: Feb. 13, 2026, 0044 UTC

Length of Outage/Event: 75 Hours 48 Minutes

Details/Specifics: Six (6) special orbits of NPP/OMPS DIAG SCIENCE data will occur on the dates/times listed below. These special orbits will result in no NOM APID science data on those orbits.

Specific dates of special (CBM) measurement executions:

2026-Feb-09: CBM Block ID 39: CBM to be started at 01:39:27 UTC (delayed from STC of 00:51:27 UTC)
2026-Feb-09: CBM Block ID 39: CBM to be started at 03:20:57 UTC (delayed from STC of 02:32:57 UTC)
2026-Feb-12: CBM Block ID 47: CBM to be started at 02:16:12 UTC (delayed from STC of 01:36:12 UTC)
2026-Feb-12: CBM Block ID 47: CBM to be started at 03:57:43 UTC (delayed from STC of 03:17:43 UTC)
2026-Feb-13: CBM Block ID 42: CBM to be started at 02:05:17 UTC (delayed from STC of 01:17:17 UTC)
2026-Feb-13: CBM Block ID 42: CBM to be started at 03:46:48 UTC (delayed from STC of 02:58:48 UTC)

This information has been provided by OMPS SIPS. Please contact Jonathan Stacey (jonathan.m.stacey@nasa.gov) or Thomas Kelly (thomas.j.kelly-1@nasa.gov) if you have questions or concerns.

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