NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2025076 SUBJ: SVN53 (PRN17) FORECAST OUTAGE SUMMARY JDAY 338/0600 - JDAY 338/1800 1. NANU TYPE: FCSTDV NANU NUMBER: 2025076 NANU DTG: 301732Z NOV 2025 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 53 PRN: 17 START JDAY: 338 START TIME ZULU: 0600 START CALENDAR DATE: 04 DEC 2025 STOP JDAY: 338 STOP TIME ZULU: 1800 STOP CALENDAR DATE: 04 DEC 2025 2. CONDITION: GPS SATELLITE SVN53 (PRN17) WILL BE UNUSABLE ON JDAY 338 (04 DEC 2025) BEGINNING 0600 ZULU UNTIL JDAY 338 (04 DEC 2025) ENDING 1800 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