Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2018   18:27:03   (   0.02, -75.20) (  -0.09, -75.69)   56.48                80
 09/15/2018   18:10:58   (   0.02, -75.20) (   0.90, -71.16)  460.21                80
 09/17/2018   06:30:08   (  -0.03, -75.21) (   0.24, -76.44)  139.31                80
 09/18/2018   06:14:03   (  -0.03, -75.22) (  -0.75, -71.90)  377.65                80
 09/19/2018   18:33:20   (   0.04, -75.23) (  -0.41, -77.21)  226.06                80
 09/20/2018   18:17:16   (   0.04, -75.24) (   0.59, -72.68)  291.29                80
 09/22/2018   06:39:05   (  -0.04, -75.26) (   0.55, -77.96)  307.11                80
 09/23/2018   06:17:41   (  -0.04, -75.27) (  -0.44, -73.42)  210.65                80
 09/24/2018   18:42:18   (   0.04, -75.29) (  -0.71, -78.73)  391.79                80
 09/25/2018   18:23:34   (   0.04, -75.31) (   0.29, -74.20)  126.35                80