NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2019108
SUBJ: SVN51 (PRN20) FORECAST OUTAGE JDAY 204/2315 - JDAY 205/1115
1.     NANU TYPE: FCSTDV
       NANU NUMBER: 2019108
       NANU DTG: 182203Z JUL 2019
       REFERENCE NANU: N/A
       REF NANU DTG: N/A
       SVN: 51
       PRN: 20
       START JDAY: 204
       START TIME ZULU: 2315
       START CALENDAR DATE: 23 JUL 2019
       STOP JDAY: 205
       STOP TIME ZULU: 1115
       STOP CALENDAR DATE: 24 JUL 2019

2.  CONDITION: GPS SATELLITE SVN51 (PRN20) WILL BE UNUSABLE ON JDAY 204
    (23 JUL 2019) BEGINNING 2315 ZULU UNTIL JDAY 205 (24 JUL 2019)
    ENDING 1115 ZULU.

3.  POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTPS://WWW.NAVCEN.USCG.GOV
    MILITARY - GPS OPERATIONS CENTER at HTTPS://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541,
    COMM 719-567-2541, gpsoperationscenter@us.af.mil, HTTPS://GPS.AFSPC.AF.MIL 
    MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-3514, 
    COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL