Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/24/2018   18:33:17   (   0.00, -75.16) (  -0.48, -77.33)  246.78                80
 12/25/2018   18:17:12   (   0.01, -75.16) (   0.56, -72.80)  269.37                80
 12/27/2018   06:39:00   (  -0.01, -75.16) (   0.63, -78.07)  331.19                80
 12/28/2018   06:17:35   (  -0.01, -75.16) (  -0.40, -73.54)  185.29                80
 12/29/2018   18:42:10   (   0.01, -75.17) (  -0.83, -78.84)  418.37                80
 12/30/2018   18:20:46   (   0.02, -75.18) (   0.21, -74.31)   98.80                80
 01/01/2019   06:45:13   (  -0.01, -75.19) (   0.98, -79.58)  499.92                80
 01/02/2019   06:23:49   (  -0.01, -75.20) (  -0.06, -75.05)   17.49                80
 01/04/2019   18:29:40   (   0.00, -75.23) (  -0.13, -75.82)   67.39                80
 01/05/2019   18:08:15   (   0.01, -75.25) (   0.91, -71.30)  450.53                80