UNCLASSIFIED
GPS OPERATIONAL ADVISORY        111.OA1
SUBJ: GPS STATUS      21 APR 2019

1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM):
A. BLOCK I  : NONE
B. BLOCK II : PRNS  1,  2,  3,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15
   PLANE    : SLOT D2, D1, E1, E3, D4, A4, C3, F3, E2, D5, B4, F6, F5, F2
   CLOCK    :      RB, RB, RB, RB, RB, RB, CS, RB, RB, 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, D6, C5, E4, D3, E6, F4, A1, B2, B5, C2, B3, C1
   CLOCK    :      RB, RB, RB, RB, RB, RB, RB, RB, CS, RB, RB, RB, RB, RB
   BLOCK II : PRNS 30, 31, 32
   PLANE    : SLOT A3, A2, F1
   CLOCK    :      RB, RB, RB
C. BLOCK III: NONE

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)

2019049       051543Z APR 2019    32   FCSTDV       099/0930-099/2130
2019050       051547Z APR 2019    22   FCSTDV       102/0810-102/2010
2019054       091405Z APR 2019    32   FCSTSUMM     099/0941-099/1404
2019057       101813Z APR 2019    03   FCSTDV       109/0845-109/2045
2019059       121436Z APR 2019    22   FCSTSUMM     102/0829-102/1432
2019061       191438Z APR 2019    03   FCSTSUMM     109/0912-109/1430
2019062       191618Z APR 2019    01   FCSTMX       114/1730-116/1730
B. ADVISORIES:           
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)

2019051       071353Z APR 2019    18   UNUNOREF     097/1348-097/1350
2019052       071406Z APR 2019    18   UNUNOREF     097/1353-097/1355
2019053       091336Z APR 2019    18   UNUNOREF     099/1329-099/1331
2019055       101324Z APR 2019    18   UNUNOREF     100/1318-100/1319
2019056       101330Z APR 2019    18   UNUNOREF     100/1321-100/1322
2019058       111328Z APR 2019    18   UNUNOREF     101/1326-101/1327
2019060       171309Z APR 2019    18   UNUNOREF     107/1313-107/1314
C. GENERAL:           
NANU          MSG DATE/TIME       PRN  TYPE         SUMMARY (JDAY/ZULU TIME START - STOP)

2014038       241350Z APR 2014         GENERAL      /-/
2014039       271351Z APR 2014         GENERAL      /-/
2017122       272144Z NOV 2017         GENERAL      /-/
2018010       052217Z MAR 2018         GENERAL      /-/
2018042       032104Z OCT 2018         GENERAL      /-/
2018051       121624Z NOV 2018         GENERAL      /-/
2019001       022242Z JAN 2019         GENERAL      /-/
2019017       291531Z JAN 2019         GENERAL      /-/
2019040       220026Z MAR 2019         GENERAL      /-/

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 
HTTPS://WWW.NAVCEN.USCG.GOV
C. MILITARY SUPPORT WEBPAGES CAN BE FOUND AT THE FOLLOWING
HTTPS://GPS.AFSPC.AF.MIL/GPS OR HTTPS://GPS.AFSPC.AF.MIL/GPSOC