SUBJ: GPS STATUS 12 May 2000 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I : NONE B. BLOCK II: PRNS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, PLANE : SLOT F4, B3, C2, D4, B4, C1, C4, A3, A1, E3, D2, F5, D5, CLOCK : CS, CS, CS, RB, CS, CS, RB, RB, CS, CS, RB, RB, CS, BLOCK II: PRNS 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31 PLANE : SLOT E5, D3, F3, A5, E2, B1, E4, D1, A2, F2, A4, F1, B2, C3 CLOCK : CS, CS, CS, CS, CS, RB, CS, RB, CS, RB, CS, RB, CS, CS 2. CURRENT ADVISORIES AND FORECASTS : A. FORECASTS: FOR SEVEN DAYS AFTER EVENT CONCLUDES. NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 2000057 262003Z APR 2000 17 FCSTDV 123/2215-124/1015 2000058 271356Z APR 2000 03 FCSTMX 124/1600-125/0400 2000059 030407Z MAY 2000 17 FCSTSUMM 123/2235-124/0408 2000060 032130Z MAY 2000 03 FCSTSUMM 124/1701-124/2106 2000061 051539Z MAY 2000 22 FCSTDV 132/1815-133/0615 2000062 051542Z MAY 2000 17 FCSTMX 130/1600-131/0400 2000064 091733Z MAY 2000 17 FCSTSUMM 130/1629-130/1724 2000065 111415Z MAY 2000 16 FCSTMX 136/1400-137/0200 2000066 111423Z MAY 2000 08 FCSTMX 137/0800-137/2000 2000067 120028Z MAY 2000 22 FCSTSUMM 132/1820-133/0018 B. ADVISORIES: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 2000063 081402Z MAY 2000 19 UNUNOREF 129/0941-129/0951 C. GENERAL: NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP) 3. REMARKS: A. ANTI-SPOOF WAS DEACTIVATED ON JDAY 033 (02 FEB 97) AT OOOOZ. ANTI-SPOOF WAS REACTIVATED ON JDAY 055 (24 FEB 97) AT 0000Z. B. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS SUPPORT CENTER AT (719)567-2541 OR DSN 560-2541. C. CIVILIAN: FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT COMMERCIAL (703)313-5900 24 HOURS DAILY, AND INTERNET HTTP://WWW.NAVCEN.USCG.MIL OR FTP://FTP.NAVCEN.USCG.MIL. D. MILITARY: FOR INFORMATION, CONTACT CAPT PAUL HERMANN, 2SOPS/DOAN NAVIGATION ANALYST AT (719)567-2744, DSN 560-2744, OR INTERNET HTTP://WWW.SCHRIEVER.AF.MIL/GPS.