Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 10 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/01/2017   19:14:28   (   0.00, -89.30) (   0.50, -87.04)  257.05                80
 11/03/2017   07:36:15   (  -0.00, -89.29) (   0.68, -92.31)  344.67                80
 11/04/2017   07:14:51   (  -0.00, -89.29) (  -0.35, -87.79)  171.29                80
 11/05/2017   19:36:47   (   0.00, -89.29) (  -0.84, -93.09)  433.39                80
 11/06/2017   19:20:42   (   0.00, -89.29) (   0.14, -88.55)   82.76                80
 11/09/2017   07:23:44   (   0.00, -89.28) (   0.01, -89.30)    2.70                80
 11/11/2017   19:24:16   (   0.00, -89.28) (  -0.16, -90.08)   90.62                80
 11/12/2017   19:08:11   (   0.00, -89.29) (   0.81, -85.54)  426.15                80
 11/14/2017   07:29:59   (  -0.00, -89.29) (   0.31, -90.82)  174.01                80