Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/12/2018   06:17:37   (   0.00, -75.14) (  -0.34, -73.52)  183.56                80
 12/13/2018   18:42:13   (   0.00, -75.14) (  -0.85, -78.83)  421.12                80
 12/14/2018   18:20:49   (   0.01, -75.14) (   0.18, -74.30)   95.38                80
 12/17/2018   06:23:51   (  -0.01, -75.15) (  -0.03, -75.04)   12.38                80
 12/19/2018   18:29:43   (   0.00, -75.17) (  -0.12, -75.82)   74.08                80
 12/20/2018   18:08:18   (   0.00, -75.17) (   0.85, -71.28)  443.09                80
 12/22/2018   06:32:45   (   0.01, -75.19) (   0.33, -76.55)  156.10                80
 12/23/2018   06:11:21   (   0.00, -75.19) (  -0.70, -72.02)  360.98                80
 12/24/2018   18:35:57   (  -0.01, -75.20) (  -0.47, -77.33)  242.16                80
 12/25/2018   18:14:32   (   0.00, -75.21) (   0.57, -72.81)  275.19                80