Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 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)
 03/10/2018   06:10:33   (   0.01, -75.18) (  -0.72, -71.86)  378.31                80
 03/11/2018   18:32:31   (  -0.02, -75.23) (  -0.47, -77.17)  222.04                80
 03/12/2018   18:16:27   (  -0.02, -75.24) (   0.58, -72.65)  295.94                80
 03/14/2018   06:38:14   (   0.02, -75.25) (   0.65, -77.91)  303.75                80
 03/15/2018   06:16:51   (   0.02, -75.27) (  -0.41, -73.39)  214.31                80
 03/16/2018   18:38:48   (  -0.03, -75.31) (  -0.77, -78.70)  385.38                80
 03/17/2018   18:22:44   (  -0.02, -75.34) (   0.22, -74.16)  133.25                80
 03/19/2018   06:44:32   (   0.03, -75.36) (   0.95, -79.44)  465.05                80
 03/20/2018   06:23:09   (   0.02, -75.38) (  -0.11, -74.92)   53.56                80
 03/22/2018   18:26:21   (  -0.02, -75.45) (  -0.07, -75.69)   27.07                80
 03/23/2018   18:10:17   (  -0.02, -75.48) (   0.93, -71.16)  491.92                80