Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 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)
 03/15/2018   06:16:50   (   0.01, -75.18) (  -0.38, -73.38)  204.33                80
 03/16/2018   18:38:48   (  -0.02, -75.21) (  -0.81, -78.69)  397.23                80
 03/17/2018   18:22:44   (  -0.01, -75.22) (   0.25, -74.17)  120.29                80
 03/19/2018   06:44:31   (   0.02, -75.23) (   0.98, -79.43)  479.64                80
 03/20/2018   06:23:08   (   0.01, -75.24) (  -0.07, -74.91)   37.83                80
 03/22/2018   18:26:21   (  -0.01, -75.29) (  -0.11, -75.68)   45.66                80
 03/23/2018   18:10:16   (  -0.01, -75.30) (   0.89, -71.15)  472.18                80
 03/25/2018   06:32:05   (   0.01, -75.31) (   0.28, -76.42)  127.14                80
 03/26/2018   06:10:41   (   0.01, -75.33) (  -0.78, -71.91)  390.73                80
 03/27/2018   18:32:38   (  -0.02, -75.37) (  -0.45, -77.20)  209.80                80
 03/28/2018   18:16:34   (  -0.02, -75.39) (   0.61, -72.68)  308.80                80