GPS OPERATIONAL ADVISORY 228
SUBJ: GPS STATUS 15 AUG 2008

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I : NONE
B. BLOCK II: PRNS 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
PLANE : SLOT D1, C2, D4, B5, C5, A6, A3, A1, E3, D2, B4, F3, F1, F2
CLOCK : RB, CS, RB, RB, RB, RB, CS, CS, CS, RB, RB, RB, RB, RB
BLOCK II: PRNS 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29
PLANE : SLOT B1, C4, E4, C3, E1, D3, E2, F4, D5, A5, F5, A4, B3, C1
CLOCK : RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, CS, RB, RB
BLOCK II: PRNS 30, 31, 32
PLANE : SLOT B2, A2, E5
CLOCK : CS, RB, RB
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)

2008073 231850Z JUL 2008 21 FCSTMX 213/1300-214/0100
2008078 302000Z JUL 2008 22 FCSTMX 217/1330-218/0130
2008079 302005Z JUL 2008 18 FCSTMX 218/1400-219/0200
2008080 302020Z JUL 2008 28 FCSTDV 220/1850-221/0930
2008081 311653Z JUL 2008 21 FCSTSUMM 213/1311-213/1643
2008082 041738Z AUG 2008 22 FCSTSUMM 217/1431-217/1726
2008083 051700Z AUG 2008 18 FCSTSUMM 218/1406-218/1655
2008086 080135Z AUG 2008 28 FCSTSUMM 220/1858-221/0122
B. ADVISORIES:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU
TIME START - STOP)

2008084 052349Z AUG 2008 05 UNUSUFN 218/2338-/
C. GENERAL:
NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU
TIME START - STOP)

3. REMARKS:
A. THE POINT OF CONTACT FOR GPS MILITARY OPERATIONAL SUPPORT IS THE GPS
OPERATIONS CENTER AT (719)567-2541 OR DSN 560-2541.
B. CIVILIAN: FOR INFORMATION, CONTACT US COAST GUARD NAVCEN AT
COMMERCIAL (703)313-5900 24 HOURS DAILY AND INTERNET
HTTP://WWW.NAVCEN.USCG.GOV
C. MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING
HTTP://GPS.AFSPC.AF.MIL/GPS OR HTTP://GPS.AFSPC.AF.MIL/GPSOC