Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 11 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/19/2017   07:36:12   (   0.01, -89.33) (   0.69, -92.32)  341.44                80
 11/20/2017   07:14:48   (   0.01, -89.33) (  -0.35, -87.80)  175.50                80
 11/21/2017   19:36:44   (  -0.01, -89.36) (  -0.83, -93.10)  426.67                80
 11/22/2017   19:20:38   (  -0.01, -89.36) (   0.15, -88.57)   90.58                80
 11/25/2017   07:21:01   (   0.00, -89.37) (  -0.02, -89.31)    7.21                80
 11/27/2017   19:24:12   (   0.00, -89.41) (  -0.17, -90.08)   77.05                80
 11/28/2017   19:08:08   (   0.00, -89.42) (   0.88, -85.56)  440.66                80
 11/30/2017   07:29:55   (  -0.00, -89.43) (   0.30, -90.83)  159.19                80
 12/01/2017   07:08:29   (  -0.00, -89.44) (  -0.68, -86.29)  358.37                80