Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2018   18:20:49   (   0.00, -75.14) (   0.22, -74.31)   95.56                80
 12/17/2018   06:23:51   (  -0.00, -75.15) (  -0.01, -75.04)   12.83                80
 12/19/2018   18:29:43   (  -0.00, -75.17) (  -0.14, -75.82)   73.96                80
 12/20/2018   18:08:18   (  -0.00, -75.17) (   0.89, -71.29)  443.16                80
 12/22/2018   06:32:46   (   0.01, -75.19) (   0.30, -76.56)  155.94                80
 12/23/2018   06:11:20   (   0.01, -75.19) (  -0.68, -72.02)  361.14                80
 12/24/2018   18:35:56   (  -0.01, -75.20) (  -0.50, -77.33)  242.16                80
 12/25/2018   18:14:32   (  -0.00, -75.21) (   0.54, -72.80)  275.17                80
 12/27/2018   06:38:59   (   0.01, -75.23) (   0.65, -78.07)  323.13                80