NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2026011 SUBJ: SVN58 (PRN12) FORECAST OUTAGE JDAY 029/1045 - JDAY 029/2245 1. NANU TYPE: FCSTDV NANU NUMBER: 2026011 NANU DTG: 231926Z JAN 2026 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 58 PRN: 12 START JDAY: 029 START TIME ZULU: 1045 START CALENDAR DATE: 29 JAN 2026 STOP JDAY: 029 STOP TIME ZULU: 2245 STOP CALENDAR DATE: 29 JAN 2026 2. CONDITION: GPS SATELLITE SVN58 (PRN12) WILL BE UNUSABLE ON JDAY 029 (29 JAN 2026) BEGINNING 1045 ZULU UNTIL JDAY 029 (29 JAN 2026) ENDING 2245 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