Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 19.  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   (   0.03, -75.17) (   0.33, -76.48)  149.77                80
 01/21/2018   06:10:58   (   0.03, -75.17) (  -0.67, -71.94)  367.29                80
 01/22/2018   18:32:53   (  -0.03, -75.20) (  -0.51, -77.25)  233.14                80
 01/23/2018   18:16:48   (  -0.03, -75.21) (   0.55, -72.72)  284.30                80
 01/25/2018   06:38:35   (   0.04, -75.20) (   0.66, -77.98)  317.26                80
 01/26/2018   06:17:09   (   0.04, -75.21) (  -0.34, -73.45)  200.22                80
 01/27/2018   18:39:04   (  -0.05, -75.24) (  -0.84, -78.75)  399.83                80
 01/28/2018   18:22:59   (  -0.05, -75.25) (   0.17, -74.21)  117.89                80
 01/30/2018   06:44:46   (   0.05, -75.24) (   0.99, -79.48)  482.98                80
 01/31/2018   06:23:21   (   0.06, -75.25) (  -0.02, -74.95)   34.91                80
 02/02/2018   18:26:31   (  -0.06, -75.31) (  -0.15, -75.72)   45.82                80