Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/11/2018   06:39:02   (  -0.00, -75.14) (   0.65, -78.06)  332.75                80
 12/12/2018   06:17:37   (  -0.01, -75.14) (  -0.38, -73.53)  183.24                80
 12/13/2018   18:42:14   (   0.01, -75.14) (  -0.81, -78.84)  421.39                80
 12/14/2018   18:20:49   (   0.01, -75.14) (   0.22, -74.31)   95.08                80
 12/17/2018   06:23:51   (  -0.01, -75.15) (  -0.01, -75.04)   12.29                80
 12/19/2018   18:29:43   (   0.00, -75.16) (  -0.14, -75.82)   74.59                80
 12/20/2018   18:08:18   (   0.01, -75.17) (   0.89, -71.29)  442.43                80
 12/22/2018   06:32:46   (   0.00, -75.18) (   0.30, -76.56)  156.81                80
 12/23/2018   06:11:21   (  -0.00, -75.19) (  -0.73, -72.03)  360.20                80