Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 23.  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) (  -0.33,-104.19)    2.83                80
 09/27/2018   08:26:59   (   0.31,-104.11) (   0.47,-104.93)   93.62                80
 09/28/2018   08:05:35   (   0.32,-104.10) (  -0.53,-100.40)  421.70                80
 09/29/2018   20:27:32   (  -0.30,-104.14) (  -0.63,-105.71)  178.34                80
 09/30/2018   20:11:28   (  -0.31,-104.14) (   0.37,-101.18)  338.43                80
 10/02/2018   08:33:16   (   0.28,-104.10) (   0.82,-106.44)  267.31                80
 10/03/2018   08:11:52   (   0.29,-104.09) (  -0.18,-101.91)  247.55                80
 10/04/2018   20:33:49   (  -0.27,-104.10) (  -0.97,-107.22)  356.11                80
 10/05/2018   20:17:44   (  -0.28,-104.10) (   0.03,-102.69)  160.60                80
 10/07/2018   08:39:34   (   0.25,-104.09) (   1.11,-107.97)  441.72                80