Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 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)
 01/15/2018   06:23:32   (   0.02, -75.19) (  -0.02, -74.98)   23.03                80
 01/17/2018   18:29:22   (  -0.02, -75.24) (  -0.10, -75.76)   59.10                80
 01/18/2018   18:07:57   (  -0.01, -75.25) (   0.90, -71.23)  458.52                80
 01/20/2018   06:32:23   (   0.02, -75.23) (   0.32, -76.48)  143.63                80
 01/21/2018   06:10:59   (   0.01, -75.24) (  -0.74, -71.96)  374.18                80
 01/22/2018   18:35:34   (  -0.02, -75.29) (  -0.44, -77.26)  224.06                80
 01/23/2018   18:14:09   (  -0.01, -75.31) (   0.56, -72.73)  294.10                80
 01/25/2018   06:38:36   (   0.02, -75.30) (   0.59, -78.00)  307.07                80
 01/26/2018   06:17:10   (   0.02, -75.31) (  -0.41, -73.46)  211.14                80
 01/27/2018   18:41:46   (  -0.02, -75.37) (  -0.76, -78.76)  386.73                80