Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2018   20:21:15   (  -0.32,-104.17) (  -0.30,-104.20)    3.71                80
 09/27/2018   08:26:59   (   0.31,-104.11) (   0.50,-104.93)   93.69                80
 09/28/2018   08:05:34   (   0.32,-104.10) (  -0.50,-100.39)  421.59                80
 09/29/2018   20:27:32   (  -0.30,-104.14) (  -0.66,-105.70)  178.58                80
 09/30/2018   20:11:27   (  -0.31,-104.14) (   0.34,-101.17)  338.15                80
 10/02/2018   08:33:17   (   0.28,-104.10) (   0.80,-106.45)  267.52                80
 10/03/2018   08:11:52   (   0.29,-104.08) (  -0.20,-101.92)  247.31                80
 10/04/2018   20:33:49   (  -0.27,-104.09) (  -0.95,-107.23)  356.50                80
 10/05/2018   20:17:45   (  -0.28,-104.10) (   0.05,-102.69)  160.19                80