Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 7 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2018   06:17:01   (  -0.02, -75.19) (  -0.41, -73.33)  211.12                80
 07/22/2018   18:38:59   (   0.02, -75.18) (  -0.74, -78.65)  394.87                80
 07/23/2018   18:22:55   (   0.02, -75.18) (   0.23, -74.11)  121.27                80
 07/25/2018   06:42:04   (  -0.03, -75.19) (   0.91, -79.39)  478.76                80
 07/26/2018   06:26:01   (  -0.03, -75.19) (  -0.13, -74.87)   37.69                80
 07/28/2018   18:26:34   (   0.04, -75.20) (  -0.05, -75.65)   50.73                80
 07/29/2018   18:10:30   (   0.04, -75.21) (   0.93, -71.11)  466.27                80
 07/31/2018   06:29:39   (  -0.04, -75.23) (   0.22, -76.39)  132.39                80
 08/01/2018   06:13:36   (  -0.04, -75.24) (  -0.82, -71.87)  384.93                80
 08/02/2018   18:32:53   (   0.05, -75.25) (  -0.39, -77.17)  218.84                80