Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2018   18:22:54   (  -0.00, -75.19) (   0.21, -74.19)  112.84                80
 04/20/2018   06:44:42   (   0.01, -75.18) (   0.96, -79.47)  488.06                80
 04/21/2018   06:23:17   (   0.02, -75.18) (  -0.05, -74.93)   28.13                80
 04/23/2018   18:26:29   (  -0.02, -75.17) (  -0.14, -75.70)   60.30                80
 04/24/2018   18:10:25   (  -0.03, -75.18) (   0.87, -71.17)  456.40                80
 04/26/2018   06:32:13   (   0.03, -75.18) (   0.30, -76.44)  143.27                80
 04/27/2018   06:10:49   (   0.03, -75.19) (  -0.71, -71.91)  373.82                80
 04/28/2018   18:32:45   (  -0.03, -75.20) (  -0.48, -77.21)  229.40                80
 04/29/2018   18:16:41   (  -0.03, -75.21) (   0.53, -72.68)  288.17                80
 05/01/2018   06:38:29   (   0.01, -75.24) (   0.64, -77.96)  310.38                80