Topic: Transition of NSOF Operations from CBU-String to A-String


Date/Time Issued: March 1, 2021 2200Z


Product(s) or Data Impacted:  Real-time Data and End User Data Products (Latency)

Date/Time of Initial Impact(Primary):  March 3, 2021 1500z (JDAY 062)

Date/Time of Expected End (Primary): March 3, 2021 1810z (JDAY 062)

Date/Time of Initial Impact(Backup):  March 4, 2021 1400z (JDAY 063)

Date/Time of Expected End (Backup): March 4, 2021 1745z (JDAY 063)


Start of Window (GMT)

End of Window (GMT)

Data Sync OFF

3/3/2021 (Primary)

3/3/2021 15:04:00

3/3/2021 16:24:00


3/3/2021 (Backup)

3/3/2021 16:41:00

3/3/2021 18:04:19


3/4/2020 (Contingency Day - Primary)

3/4/2020 14:19:00

3/4/2020 15:42:00


3/4/2020 (Contingency Day - Backup)

3/4/2020 16:00:00

3/4/2020 17:25:00


Length of Outage:
   2 Hours per transition opportunity


Details/Specifics of Change:  The purpose of this notice is to inform multi-mission segments of the plan to move the JPSS Common Ground System, Command, Control, and Communications operations for the JPSS constellation from CBU string to A String on March 3rd, 2021. A backup date for this activity has been scheduled for March 4th, 2021 in the event the first attempt needs to be waived.  NPP, N20, DMSP and GCOM-W1 missions may experience data latency during this transition. 

Contact Information for Further Information: ESPCOperations at at 301-817-3880      
Web Site(s) for applicable information: N/A

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