NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2025088
SUBJ: SVN66 (PRN27) UNUSABLE JDAY 345/1041 - JDAY 351/2041
1.     NANU TYPE: UNUSABLE
       NANU NUMBER: 2025088
       NANU DTG: 172046Z DEC 2025
       REFERENCE NANU: 2025079
       REF NANU DTG: 111049Z DEC 2025
       SVN: 66
       PRN: 27
       START JDAY: 345
       START TIME ZULU: 1041
       START CALENDAR DATE: 11 DEC 2025
       STOP JDAY: 351
       STOP TIME ZULU: 2041
       STOP CALENDAR DATE: 17 DEC 2025

2.  CONDITION: GPS SATELLITE SVN66 (PRN27) WAS UNUSABLE ON JDAY 345
    (11 DEC 2025) BEGINNING 1041 ZULU UNTIL JDAY 351 (17 DEC 2025)
    ENDING 2041 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