NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2023026
SUBJ: SVN51 (PRN20) FORECAST OUTAGE SUMMARY JDAY 138/2243 - JDAY 139/0444
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 2023026
       NANU DTG: 190447Z MAY 2023
       REFERENCE NANU: 2023025
       REF NANU DTG: 121620Z MAY 2023
       SVN: 51
       PRN: 20
       START JDAY: 138
       START TIME ZULU: 2243
       START CALENDAR DATE: 18 MAY 2023
       STOP JDAY: 139
       STOP TIME ZULU: 0444
       STOP CALENDAR DATE: 19 MAY 2023

2.  CONDITION: GPS SATELLITE SVN51 (PRN20) WAS UNUSABLE ON JDAY 138
    (18 MAY 2023) BEGINNING 2243 ZULU UNTIL JDAY 139 (19 MAY 2023)
    ENDING 0444 ZULU.

3.  POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV
    MILITARY - GPS WARFIGHTER COLLABORATION CELL at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
    COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL 
    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3526. COMM 805-606-3526.
   JSPOCCOMBATOPS@US.AF.MIL