19990309: Single Chord Ops

   NOUS40KWBC 091441
     FOS/NOAAPORT NOTICE NO. 1440               MARCH 9... 1999
     
     ATTENTION         FAMILY OF SERVICES SUBSCRIBERS
                       NOAAPORT USERS
     
     SUBJECT           SINGLE CHORD OPERATIONS UPDATED
     
     GOES  SINGLE CHORD  OPERATIONS... MADE NECESSARY BY LUNAR
     AND SOLAR INTRUSIONS AT THE EDGE OF THE EARTH DISK... IMPACT
     NAVIGATION AND REGISTRATION FOR SHORT PERIODS.  USERS OF
     GOES GVAR DATA WILL SEE VARIABLE ERRORS DURING PERIODS OF
     SINGLE CHORD OPERATIONS AS NOTED BELOW.
     
     SINGLE CHORD OPERATIONS FOR THE BEVEL EFFECT ARE LISTED
     WHEN APPLICABLE.  BEVEL EFFECT OPERATION IS INTENDED TO
     AVOID A SEASONAL SPACECRAFT POINTING PROBLEM WITH ALL
     GOES SPACECRAFT CAUSED BY THE SUN S LIGHT REFLECTING INTO
     THE EARTH SENSOR.
     
     FOLLOWING ARE TIMES OF GOES-8 SINGLE CHORD OPERATIONS FOR
     THE PERIOD MARCH 08... 1999 TO APRIL 06... 1999.
     
     LUNAR INTRUSIONS
     
     03/17          0237 TO 0707 UTC
     03/29          1351 TO 1642 UTC
     03/30          1436 TO 1727 UTC
     04/02          1647 TO 1938 UTC
     
     BEVEL
     
     NONE SCHEDULED
     
     SOLAR INTRUSIONS
     
     03/08          0237 TO 0707 UTC
  03/29          1351 TO 1642 UTC
     03/30          1436 TO 1727 UTC
     04/02          1647 TO 1938 UTC
     
     BEVEL
     
     NONE SCHEDULED
     
     SOLAR INTRUSIONS
     
     03/08          0237 TO 0707 UTC
     03/09          0237 TO 0707 UTC
     03/10          0237 TO 0707 UTC
     03/11          0237 TO 0707 UTC
     03/12          0237 TO 0707 UTC
     03/13          0237 TO 0707 UTC
     03/14          0237 TO 0707 UTC
     03/15          0237 TO 0707 UTC
     03/16          0237 TO 0707 UTC
     03/17          0237 TO 0707 UTC
     03/18          0237 TO 0707 UTC
     03/19          0237 TO 0707 UTC
     03/20          0237 TO 0707 UTC
     03/23          0237 TO 0707 UTC
     03/24          0237 TO 0707 UTC
     03/25          0237 TO 0707 UTC
     03/26          0237 TO 0707 UTC
     03/27          0237 TO 0707 UTC
     03/28          0237 TO 0707 UTC
     03/29          0237 TO 0707 UTC
     03/30          0237 TO 0707 UTC
     03/31          0237 TO 0707 UTC
     04/01          0237 TO 0707 UTC
     04/02          0237 TO 0707 UTC
     04/03          0237 TO 0707 UTC
     04/04          0237 TO 0707 UTC
     04/05          0237 TO 0707 UTC
     04/06          0237 TO 0707 UTC
     
     FOLLOWING ARE TIMES OF GOES-10 SINGLE CHORD OPERATIONS
     FOR THE PERIOD MARCH 08... 1999 TO APRIL 06... 1999.
     
     LUNAR INTRUSIONS
     
     03/17          0713 TO 1153 UTC
     03/29          1800 TO 2051 UTC
     04/01          2011 TO 2303 UTC
     04/02          2055 TO 2345 UTC
     
     BEVEL
     
     NONE SCHEDULED
     
     SOLAR INTRUSIONS
     
     03/08          0713 TO 1153 UTC
     03/09          0713 TO 1153 UTC
     03/10          0713 TO 1153 UTC
     03/11          0713 TO 1153 UTC
     03/12          0713 TO 1153 UTC
     03/13          0713 TO 1153 UTC
     03/14          0713 TO 1153 UTC
     03/15          0713 TO 1153 UTC
     03/16          0713 TO 1153 UTC
     03/17          0713 TO 1153 UTC
     03/18          0713 TO 1153 UTC
     03/23          0713 TO 1153 UTC
     03/24          0713 TO 1153 UTC
     03/25          0713 TO 1153 UTC
     03/26          0713 TO 1153 UTC
     03/27          0713 TO 1153 UTC
     03/28          0713 TO 1153 UTC
     03/29          0713 TO 1153 UTC
     03/30          0713 TO 1153 UTC
     03/31          0713 TO 1153 UTC
     04/01          0713 TO 1153 UTC
     04/02          0713 TO 1153 UTC
     04/03          0713 TO 1153 UTC
     04/04          0713 TO 1153 UTC
     04/05          0713 TO 1153 UTC
     04/06          0713 TO 1153 UTC
     END
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