Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2018   08:26:59   (   0.31,-104.11) (   0.47,-104.93)   93.33                80
 09/28/2018   08:05:35   (   0.32,-104.10) (  -0.52,-100.40)  422.08                80
 09/29/2018   20:27:32   (  -0.30,-104.15) (  -0.63,-105.71)  177.33                80
 09/30/2018   20:11:28   (  -0.31,-104.15) (   0.37,-101.17)  339.53                80
 10/02/2018   08:33:16   (   0.28,-104.11) (   0.83,-106.44)  266.48                80
 10/03/2018   08:11:52   (   0.29,-104.09) (  -0.17,-101.91)  248.49                80
 10/04/2018   20:33:49   (  -0.27,-104.11) (  -0.98,-107.22)  354.60                80
 10/05/2018   20:17:44   (  -0.28,-104.11) (   0.02,-102.68)  162.25                80
 10/07/2018   08:39:34   (   0.25,-104.10) (   1.12,-107.96)  440.34                80
 10/08/2018   08:18:09   (   0.27,-104.09) (   0.12,-103.43)   75.03                80