NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2025031
SUBJ: SVN55 (PRN15) FORECAST OUTAGE SUMMARY JDAY 107/2131 - JDAY 108/0400
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 2025031
       NANU DTG: 180404Z APR 2025
       REFERENCE NANU: 2025029
       REF NANU DTG: 142334Z APR 2025
       SVN: 55
       PRN: 15
       START JDAY: 107
       START TIME ZULU: 2131
       START CALENDAR DATE: 17 APR 2025
       STOP JDAY: 108
       STOP TIME ZULU: 0400
       STOP CALENDAR DATE: 18 APR 2025

2.  CONDITION: GPS SATELLITE SVN55 (PRN15) WAS UNUSABLE ON JDAY 107
    (17 APR 2025) BEGINNING 2131 ZULU UNTIL JDAY 108 (18 APR 2025)
    ENDING 0400 ZULU.

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