NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2008081 SUBJ: SVN45 (PRN21) FORECAST OUTAGE SUMMARY JDAY 213/1311 - JDAY 213/1643 1. NANU TYPE: FCSTSUMM NANU NUMBER: 2008081 NANU DTG: 311653Z JUL 2008 REFERENCE NANU: 2008073 REF NANU DTG: 231850Z JUL 2008 SVN: 45 PRN: 21 START JDAY: 213 START TIME ZULU: 1311 START CALENDAR DATE: 31 JUL 2008 STOP JDAY: 213 STOP TIME ZULU: 1643 STOP CALENDAR DATE: 31 JUL 2008 2. CONDITION: GPS SATELLITE SVN45 (PRN21) WAS UNUSABLE ON JDAY 213 (31 JUL 2008) BEGINNING 1311 ZULU UNTIL JDAY 213 (31 JUL 2008) ENDING 1643 ZULU. 3. POC: CIVILIAN - NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV MILITARY - GPS OPERATIONS CENTER at HTTP://GPS.AFSPC.AF.MIL/GPSOC, DSN 560-2541, COMM 719-567-2541, gps_support@schriever.af.mil, HTTP://gps.afspc.af.mil MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN 276-9994, COMM 805-606-9994, JSPOCCOMBATOPS@VANDENBERG.AF.MIL