NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2019079 SUBJ: SVN34 (PRN18) UNUSABLE JDAY 151/1411 - JDAY 151/1413 1. NANU TYPE: UNUNOREF NANU NUMBER: 2019079 NANU DTG: 311415Z MAY 2019 REFERENCE NANU: N/A REF NANU DTG: N/A SVN: 34 PRN: 18 START JDAY: 151 START TIME ZULU: 1411 START CALENDAR DATE: 31 MAY 2019 STOP JDAY: 151 STOP TIME ZULU: 1413 STOP CALENDAR DATE: 31 MAY 2019 2. CONDITION: GPS SATELLITE SVN34 (PRN18) WAS UNUSABLE ON JDAY 151 (31 MAY 2019) BEGINNING 1411 ZULU UNTIL JDAY 151 (31 MAY 2019) ENDING 1413 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