Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 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)
 03/19/2018   06:44:32   (   0.02, -75.21) (   0.97, -79.43)  481.44                80
 03/20/2018   06:23:08   (   0.02, -75.22) (  -0.08, -74.91)   36.22                80
 03/22/2018   18:26:21   (  -0.02, -75.27) (  -0.10, -75.69)   47.33                80
 03/23/2018   18:10:17   (  -0.01, -75.28) (   0.90, -71.15)  470.58                80
 03/25/2018   06:32:05   (   0.02, -75.30) (   0.27, -76.43)  128.42                80
 03/26/2018   06:10:40   (   0.02, -75.31) (  -0.73, -71.89)  389.52                80
 03/27/2018   18:32:38   (  -0.02, -75.35) (  -0.45, -77.20)  211.00                80
 03/28/2018   18:16:33   (  -0.02, -75.38) (   0.55, -72.67)  307.68                80
 03/30/2018   06:38:21   (   0.02, -75.41) (   0.62, -77.94)  289.67                80
 03/31/2018   06:16:58   (   0.02, -75.43) (  -0.44, -73.42)  229.24                80