Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2017   06:55:26   (   0.00, -80.74) (   0.47, -82.86)  241.21                80
 12/08/2017   06:39:17   (  -0.00, -79.41) (  -0.28, -78.26)  131.10                80
 12/10/2017   18:39:36   (   0.01, -76.08) (  -0.59, -78.88)  318.00                80
 12/11/2017   18:23:25   (   0.01, -74.76) (   0.10, -74.28)   55.20                80
 12/12/2017   18:04:36   (   0.01, -73.45) (   0.85, -69.69)  428.75                80
 12/14/2017   06:23:35   (  -0.00, -71.41) (   0.79, -74.85)  392.49                80
 12/15/2017   06:04:46   (  -0.00, -70.10) (   0.04, -70.26)   18.55                80
 12/16/2017   05:48:36   (  -0.00, -68.79) (  -0.72, -65.67)  355.27                80
 12/17/2017   18:07:44   (  -0.00, -66.80) (  -0.90, -70.88)  464.88                80
 12/18/2017   17:48:54   (  -0.00, -65.49) (  -0.20, -66.28)   90.53                80
 12/19/2017   17:32:44   (  -0.00, -64.18) (   0.55, -61.69)  283.74                80