Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2018   18:26:33   (  -0.00, -75.19) (  -0.11, -75.70)   57.97                80
 05/26/2018   18:10:28   (  -0.00, -75.19) (   0.91, -71.17)  458.78                80
 05/28/2018   06:32:15   (   0.00, -75.20) (   0.30, -76.43)  140.78                80
 05/29/2018   06:10:51   (  -0.00, -75.20) (  -0.72, -71.90)  376.10                80
 05/30/2018   18:32:47   (   0.01, -75.21) (  -0.45, -77.20)  227.80                80
 05/31/2018   18:16:43   (   0.01, -75.21) (   0.57, -72.67)  289.43                80
 06/02/2018   06:38:31   (  -0.02, -75.23) (   0.58, -77.95)  309.10                80
 06/03/2018   06:17:07   (  -0.02, -75.24) (  -0.44, -73.42)  208.36                80
 06/04/2018   18:39:03   (   0.02, -75.25) (  -0.74, -78.72)  394.72                80
 06/05/2018   18:22:58   (   0.02, -75.27) (   0.29, -74.19)  123.32                80
 06/07/2018   06:44:46   (  -0.02, -75.30) (   0.92, -79.45)  473.84                80
 06/08/2018   06:23:21   (  -0.03, -75.31) (  -0.10, -74.92)   44.37                80