NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2026009 SUBJ: SVN78 (PRN11) FORECAST OUTAGE JDAY 023/0615 - JDAY 023/1815 1. NANU TYPE: FCSTDV NANU NUMBER: 2026009 NANU DTG: 152118Z JAN 2026 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 78 PRN: 11 START JDAY: 023 START TIME ZULU: 0615 START CALENDAR DATE: 23 JAN 2026 STOP JDAY: 023 STOP TIME ZULU: 1815 STOP CALENDAR DATE: 23 JAN 2026 2. CONDITION: GPS SATELLITE SVN78 (PRN11) WILL BE UNUSABLE ON JDAY 023 (23 JAN 2026) BEGINNING 0615 ZULU UNTIL JDAY 023 (23 JAN 2026) ENDING 1815 ZULU. 3. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV MILITARY - GLOBAL WARFIGHTER COLLABORATION CELL at HTTPS://GWCC-WS.CCE.AF.MIL/, 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 805-605-3526, JSPOCCOMBATOPS@SPACEFORCE.MIL