Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2018   18:42:11   (  -0.00, -75.20) (  -0.80, -78.84)  414.91                80
 12/30/2018   18:20:46   (   0.00, -75.21) (   0.18, -74.30)  102.85                80
 01/01/2019   06:45:13   (   0.00, -75.23) (   1.01, -79.57)  495.84                80
 01/02/2019   06:23:48   (   0.00, -75.24) (  -0.03, -75.05)   22.13                80
 01/04/2019   18:29:39   (  -0.01, -75.29) (  -0.16, -75.82)   60.82                80
 01/05/2019   18:08:15   (  -0.00, -75.31) (   0.88, -71.29)  457.71                80
 01/07/2019   06:32:42   (   0.01, -75.34) (   0.31, -76.56)  139.83                80
 01/08/2019   06:11:18   (   0.00, -75.36) (  -0.73, -72.03)  378.82                80
 01/09/2019   18:35:54   (  -0.00, -75.40) (  -0.42, -77.34)  221.15                80
 01/10/2019   18:14:28   (   0.00, -75.42) (   0.56, -72.80)  298.07                80