NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2025078
SUBJ: SVN53 (PRN17) FORECAST OUTAGE SUMMARY JDAY 338/0608 - JDAY 338/1220
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 2025078
       NANU DTG: 041241Z DEC 2025
       REFERENCE NANU: 2025076
       REF NANU DTG: 301732Z NOV 2025
       SVN: 53
       PRN: 17
       START JDAY: 338
       START TIME ZULU: 0608
       START CALENDAR DATE: 04 DEC 2025
       STOP JDAY: 338
       STOP TIME ZULU: 1220
       STOP CALENDAR DATE: 04 DEC 2025

2.  CONDITION: GPS SATELLITE SVN53 (PRN17) WAS UNUSABLE ON JDAY 338
    (04 DEC 2025) BEGINNING 0608 ZULU UNTIL JDAY 338 (04 DEC 2025)
    ENDING 1220 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