Update #1: The transition of operations from the A-String to the C-String was successfully completed on Wednesday, March 28th at 18:52:00 UTC. The C-String is now officially the Prime string for NPP, N20 and N21 operations. Although the T&C portion of the transition is complete, we are requesting that all respective teams/groups and external users check their access to the CBU non-commanding VDI. This is a step in our post-string transition checklist. Please confirm successful access or issues/failures via text to Wil Asuncion at 240-351-6786).

Topic: Transition of Operations from A-String to C-String on March 29^th2023

Date/Time Issued: March 29, 2023 2006Z

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

Date/Time of Initial Impact (Primary): March 29, 2023 15:16:00z (JDAY 088)
Date/Time of Expected End (Primary): March 29, 2023 16:40:00z (JDAY 088)
Date/Time of Initial Impact (Secondary): March 29, 2023 16:58:00z (JDAY 088)
Date/Time of Expected End (Secondary): March 29, 2023 18:24:00z (JDAY 088)
Date/Time of Initial Impact (Tertiary): March 29, 2023 18:40:00z (JDAY 088)
Date/Time of Expected End (Tertiary): March 29, 2023 20:05:00z (JDAY 088)

Back-Orbit #1

3/29/2023 15:04:44 3/29/2023 15:20:40 OPS53 MCM
3/29/2023 15:26:59 3/29/2023 15:40:10 J02 1977 SVL
3/29/2023 15:52:45 3/29/2023 16:05:45 J01 27769 MCM
3/29/2023 15:55:57 3/29/2023 16:08:23 NPP 59166 SVL
3/29/2023 16:16:46 3/29/2023 16:30:52 J02 1977 MCM
3/29/2023 16:27:34 3/29/2023 16:38:19 GCOM 57434 SVL
3/29/2023 16:27:51 3/29/2023 16:43:49 OPS51 MCM

Back-Orbit #2

3/29/2023 16:46:31 3/29/2023 17:01:58 OPS53 MCM
3/29/2023 17:10:49 3/29/2023 17:22:22 J02 1978 SVL
3/29/2023 17:36:02 3/29/2023 17:47:18 J01 27770 MCM
3/29/2023 17:39:39 3/29/2023 17:50:49 NPP 59167 SVL
3/29/2023 18:00:06 3/29/2023 18:12:41 J02 1978 MCM
3/29/2023 18:08:20 3/29/2023 18:18:12 GCOM 57435 SVL
3/29/2023 18:09:04 3/29/2023 18:24:52 OPS51 MCM

Back-Orbit #3

3/29/2023 18:29:16 3/29/2023 18:43:36 OPS53 MCM
3/29/2023 18:54:00 3/29/2023 19:04:55 J02 1979 SVL
3/29/2023 19:20:40 3/29/2023 19:29:02 J01 27771 MCM
3/29/2023 19:43:38 3/29/2023 19:55:14 J02 1979 MCM
3/29/2023 19:48:30 3/29/2023 19:58:48 GCOM 57436 SVL
3/29/2023 19:51:10 3/29/2023 20:06:14 OPS51 MCM

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880

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

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