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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2018   18:42:14   (   0.00, -75.14) (  -0.80, -78.84)  421.11                80
 12/14/2018   18:20:48   (   0.01, -75.14) (   0.17, -74.30)   95.42                80
 12/17/2018   06:23:51   (  -0.01, -75.15) (  -0.02, -75.04)   12.50                80
 12/19/2018   18:29:43   (   0.00, -75.17) (  -0.13, -75.82)   74.04                80
 12/20/2018   18:08:18   (   0.00, -75.17) (   0.84, -71.28)  443.11                80
 12/22/2018   06:32:46   (   0.01, -75.19) (   0.28, -76.56)  156.10                80
 12/23/2018   06:11:20   (   0.00, -75.19) (  -0.69, -72.02)  361.01                80
 12/24/2018   18:35:57   (  -0.01, -75.20) (  -0.48, -77.33)  242.14                80
 12/25/2018   18:14:32   (   0.00, -75.21) (   0.56, -72.80)  275.19                80