Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2018   06:39:00   (   0.00, -75.17) (   0.63, -78.07)  329.62                80
 12/28/2018   06:17:34   (  -0.00, -75.18) (  -0.34, -73.53)  187.39                80
 12/29/2018   18:42:10   (   0.00, -75.20) (  -0.83, -78.84)  415.28                80
 12/30/2018   18:20:46   (   0.01, -75.21) (   0.21, -74.31)  102.40                80
 01/01/2019   06:45:13   (   0.00, -75.23) (   0.98, -79.58)  495.80                80
 01/02/2019   06:23:49   (   0.00, -75.24) (  -0.06, -75.05)   22.13                80
 01/04/2019   18:29:40   (  -0.01, -75.28) (  -0.13, -75.82)   61.27                80
 01/05/2019   18:08:15   (  -0.00, -75.30) (   0.91, -71.30)  457.15                80
 01/07/2019   06:32:42   (   0.01, -75.34) (   0.28, -76.56)  139.89                80
 01/08/2019   06:11:18   (   0.00, -75.36) (  -0.76, -72.04)  378.68                80