Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2018   18:17:12   (  -0.00, -75.16) (   0.55, -72.80)  269.82                80
 12/27/2018   06:39:00   (  -0.00, -75.16) (   0.64, -78.07)  331.05                80
 12/28/2018   06:17:35   (  -0.01, -75.16) (  -0.39, -73.54)  185.47                80
 12/29/2018   18:42:10   (   0.00, -75.17) (  -0.84, -78.84)  417.79                80
 12/30/2018   18:20:46   (   0.01, -75.18) (   0.20, -74.31)   99.44                80
 01/01/2019   06:45:13   (  -0.00, -75.20) (   0.99, -79.58)  499.57                80
 01/02/2019   06:23:49   (  -0.00, -75.20) (  -0.05, -75.05)   17.86                80
 01/04/2019   18:29:40   (  -0.00, -75.24) (  -0.14, -75.82)   66.56                80
 01/05/2019   18:08:15   (   0.00, -75.25) (   0.90, -71.29)  451.41                80
 01/07/2019   06:32:42   (   0.00, -75.28) (   0.29, -76.56)  146.44                80