Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/09/2018   18:23:26   (   0.03, -75.21) (   0.26, -74.18)  117.46                80
 09/11/2018   06:45:14   (  -0.03, -75.23) (   0.94, -79.45)  481.79                80
 09/12/2018   06:26:31   (  -0.03, -75.24) (  -0.11, -74.93)   35.85                80
 09/14/2018   18:27:03   (   0.03, -75.28) (  -0.06, -75.70)   48.38                80
 09/15/2018   18:10:59   (   0.03, -75.29) (   0.93, -71.17)  469.65                80
 09/17/2018   06:32:48   (  -0.04, -75.32) (   0.21, -76.45)  128.47                80
 09/18/2018   06:11:24   (  -0.04, -75.34) (  -0.78, -71.91)  389.81                80
 09/19/2018   18:33:21   (   0.04, -75.37) (  -0.37, -77.22)  211.25                80
 09/20/2018   18:17:17   (   0.05, -75.39) (   0.62, -72.69)  307.45                80
 09/22/2018   06:39:06   (  -0.05, -75.43) (   0.53, -77.97)  289.57                80