Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/16/2018   18:38:48   (  -0.02, -75.20) (  -0.78, -78.70)  397.87                80
 03/17/2018   18:22:44   (  -0.01, -75.21) (   0.22, -74.16)  119.62                80
 03/19/2018   06:44:32   (   0.02, -75.22) (   0.95, -79.44)  480.32                80
 03/20/2018   06:23:08   (   0.01, -75.23) (  -0.05, -74.90)   37.14                80
 03/22/2018   18:26:20   (  -0.01, -75.28) (  -0.13, -75.68)   46.38                80
 03/23/2018   18:10:17   (  -0.01, -75.29) (   0.93, -71.16)  471.57                80
 03/25/2018   06:32:05   (   0.02, -75.31) (   0.24, -76.43)  127.80                80
 03/26/2018   06:10:41   (   0.01, -75.32) (  -0.76, -71.90)  390.09                80
 03/27/2018   18:32:38   (  -0.02, -75.36) (  -0.42, -77.21)  210.35                80
 03/28/2018   18:16:34   (  -0.02, -75.38) (   0.58, -72.68)  308.23                80