Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 7 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/22/2018   18:38:59   (   0.01, -75.18) (  -0.74, -78.65)  394.79                80
 07/23/2018   18:22:55   (   0.02, -75.18) (   0.24, -74.11)  121.30                80
 07/25/2018   06:44:44   (  -0.02, -75.19) (   0.90, -79.39)  478.73                80
 07/26/2018   06:23:20   (  -0.02, -75.19) (  -0.08, -74.86)   37.65                80
 07/28/2018   18:26:33   (   0.02, -75.19) (  -0.09, -75.64)   50.82                80
 07/29/2018   18:10:30   (   0.02, -75.20) (   0.95, -71.11)  466.16                80
 07/31/2018   06:29:38   (  -0.02, -75.22) (   0.25, -76.38)  132.51                80
 08/01/2018   06:13:35   (  -0.02, -75.23) (  -0.79, -71.86)  384.80                80
 08/02/2018   18:32:52   (   0.02, -75.24) (  -0.42, -77.16)  219.08                80
 08/03/2018   18:16:49   (   0.02, -75.25) (   0.62, -72.64)  298.52                80