Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2018   06:17:20   (   0.01, -75.17) (  -0.36, -73.48)  192.39                80
 01/11/2018   18:39:15   (  -0.01, -75.21) (  -0.83, -78.78)  407.65                80
 01/12/2018   18:23:10   (  -0.01, -75.22) (   0.17, -74.25)  109.55                80
 01/14/2018   06:44:57   (   0.02, -75.19) (   0.99, -79.52)  493.12                80
 01/15/2018   06:23:31   (   0.01, -75.20) (  -0.01, -74.98)   24.32                80
 01/17/2018   18:26:42   (  -0.01, -75.25) (  -0.11, -75.76)   57.51                80
 01/18/2018   18:07:57   (  -0.01, -75.27) (   0.89, -71.23)  460.33                80
 01/20/2018   06:32:24   (   0.01, -75.25) (   0.27, -76.50)  141.10                80
 01/21/2018   06:10:59   (   0.00, -75.27) (  -0.74, -71.96)  376.94                80
 01/22/2018   18:35:34   (  -0.01, -75.32) (  -0.44, -77.26)  221.19                80