Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2018   06:32:23   (   0.02, -75.17) (   0.31, -76.49)  149.98                80
 01/21/2018   06:10:58   (   0.02, -75.17) (  -0.69, -71.95)  366.30                80
 01/22/2018   18:32:53   (  -0.02, -75.19) (  -0.49, -77.25)  235.12                80
 01/23/2018   18:14:08   (  -0.02, -75.19) (   0.52, -72.72)  281.51                80
 01/25/2018   06:38:35   (   0.02, -75.17) (   0.64, -77.99)  321.33                80
 01/26/2018   06:17:10   (   0.02, -75.17) (  -0.36, -73.45)  195.33                80
 01/27/2018   18:39:05   (  -0.03, -75.19) (  -0.82, -78.75)  405.73                80
 01/28/2018   18:20:20   (  -0.02, -75.19) (   0.19, -74.22)  111.15                80
 01/30/2018   06:44:47   (   0.03, -75.17) (   0.97, -79.49)  491.03                80
 01/31/2018   06:23:21   (   0.03, -75.18) (  -0.04, -74.95)   26.09                80